A358772 Numbers whose arithmetic derivative is of the form 4k+1, cf. A003415.

2, 3, 5, 6, 7, 11, 13, 14, 17, 18, 19, 22, 23, 29, 31, 37, 38, 41, 42, 43, 46, 47, 50, 53, 54, 59, 61, 62, 66, 67, 71, 73, 79, 83, 86, 89, 94, 97, 98, 101, 103, 107, 109, 113, 114, 118, 126, 127, 130, 131, 134, 137, 138, 139, 142, 149, 150, 151, 154, 157, 158, 162, 163, 166, 167, 170, 173, 179, 181

Offset: 1

Author

Antti Karttunen, Dec 01 2022

Keywords

• nonn

Crossrefs

Cf. A000040 (subsequence), A003415, A358771 (characteristic function).

Setwise difference A235991 \ A358774. Cf. also A327862, A327864.

Programs

PARI

isA358772(n) = A358771(n);