Monday, September 11, 2023

A364831 and A364589: New Sequences Published in the Online Encyclopedia of Integer Sequences

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.

In 1964 Neil Sloane started the maintenance of a list of integer sequences. Once his collection grew, he published the list in a book in 1973 ("A Handbook of Integer Sequences", by NJAS, Academic Press, NY). This book contained 2372 sequences.

Since 1996. the list in the form of a database has been maintained on the internet. As of the date of this post, it has over 300,000 different sequences that can be searched in many different ways. The formal name is The On-Line Encyclopedia of Integer Sequences or OEIS. This is a link to the database.

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

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