A373255 Numbers k for which A003415(k) == +1 (mod 3), where A003415 is the arithmetic derivative.

2, 3, 4, 5, 7, 10, 11, 12, 13, 17, 19, 21, 22, 23, 25, 29, 30, 31, 34, 37, 39, 41, 43, 46, 47, 48, 53, 55, 57, 58, 59, 61, 66, 67, 71, 73, 75, 79, 82, 83, 84, 85, 89, 93, 94, 97, 101, 102, 103, 106, 107, 109, 111, 113, 115, 118, 120, 121, 127, 128, 129, 131, 137, 138, 139, 142, 145, 147, 149, 151, 156, 157, 163

Offset

1,1

Links

Antti Karttunen, Table of n, a(n) for n = 1..10000

Prog

(PARI) isA373255 = A373254;

Crossrefs

Positions of +1's in A373253.

Cf. A000040 (subsequence), A003415, A373254 (characteristic function).

Sequence in context: A047502 A356311 A117092 * A285276 A002504 A133431

Adjacent sequences: A373252 A373253 A373254 * A373256 A373257 A373258

Keyword

nonn

Author

Antti Karttunen, May 31 2024

Status

approved