Sunday, April 9, 2023

Another Sequence Published in the Online Encyclopedia of Integer Sequences

Image: Open Source Gesture Library icon pack GestureWorks - Gesture and Multitouch Software Authoring SDK

Today, I received notification that my latest proposed sequence to the Online Encyclopedia of Integer Sequences, OEIS, was approved for publication. The sequence is the location of the first occurrence of the integer n in the decimal expression of the Golden Ratio, also known as the constant phi (1.6180339887...). The first several terms of the sequence are: 4, 0, 19, 5, 11, 22, 1, 10, 3, 7, 231. The first term 4 means the digit 0 occurs first in the constant four places right of the decimal point. The 11th term, 231 means the integer 10 occurs first 231 places after the decimal point. The sequence is assigned the designation A362058 in the OEIS.

My prior sequence, approved last month was based on the English spelling of the integers: A361746 - OEIS

4/20/2023 Update:

I had four additional sequences approved (related):

A362269 - OEIS

A362270 - OEIS

A362271 - OEIS

A362272 - OEIS

8/5/2023 Update:

I received notification of my latest approved sequence:
A362678 - OEIS (Prime numbers whose digits are prime and in nondecreasing order).

9/11/2023 Update:

I recently had two additional sequences published in the Online Encyclopedia of Integer Sequences.

A365589 - OEIS, numbers that have at least one prime digit and at least one nonprime digit and

A364831 - OEIS, primes whose digits are prime and in nonincreasing order.

To view any of the sequences that I've authored or to which I have contributed, see: james c. mcmahon - OEIS.

Women in Mathematics

(Image: Hypatia by  Jules Maurice Gaspard , public domain) I recently re-read Instant Mathematics (see prior post:   https://jamesmacmath.bl...

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