A365472 Contribution to the OEIS

 

A365472 Numbers whose digits are either all primes or all nonprimes. 1

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 14, 16, 18, 19, 22, 23, 25, 27, 32, 33, 35, 37, 40, 41, 44, 46, 48, 49, 52, 53, 55, 57, 60, 61, 64, 66, 68, 69, 72, 73, 75, 77, 80, 81, 84, 86, 88, 89, 90, 91, 94, 96, 98, 99, 100, 101, 104, 106, 108, 109, 110, 111, 114 (list; graph; refs; listen; history; edit; text; internal format)

OFFSET 1,3 COMMENTS Complement of A365589. Union of A046034 and A084984. LINKS Table of n, a(n) for n=1..65. MATHEMATICA a[n_Integer?NonNegative] := Select[Range[0, n], Module[{digits, primeDigits}, digits = IntegerDigits[#]; primeDigits = MemberQ[{2, 3, 5, 7}, #] & /@ digits; AllTrue[primeDigits, Identity] || AllTrue[primeDigits, Not]] &]; a[114] (* Robert P. P. McKone, Sep 13 2023 *) CROSSREFS Cf. A046034, A084984, A365589. Sequence in context: A252494 A030294 A125668 * A034894 A263564 A061430 Adjacent sequences: A365469 A365470 A365471 * A365473 A365474 A365475 KEYWORD nonn,base AUTHOR James C. McMahon, Sep 11 2023 STATUS approved