A359822 Numbers k whose arithmetic derivative, A003415(k), has the same parity as k.

0, 3, 4, 5, 7, 8, 11, 12, 13, 16, 17, 19, 20, 23, 24, 27, 28, 29, 31, 32, 36, 37, 40, 41, 43, 44, 45, 47, 48, 52, 53, 56, 59, 60, 61, 63, 64, 67, 68, 71, 72, 73, 75, 76, 79, 80, 83, 84, 88, 89, 92, 96, 97, 99, 100, 101, 103, 104, 105, 107, 108, 109, 112, 113, 116, 117, 120, 124, 125, 127, 128, 131, 132

Offset: 1

Author

Antti Karttunen, Jan 14 2023

Keywords

• nonn
• easy

Crossrefs

Cf. A003415, A359820, A359821 (complement).

Positions of even terms in A129283 and in A168036.

Programs

PARI

isA359822(n) = !A359820(n);

Extensions

Name edited by Peter Munn, Jan 14 2023