A374109 Numbers k such that A113177(k) and A328845(k) are not both even, where A113177 is fully additive with a(p) = Fibonacci(p) and A328845 is the first Fibonacci-based variant of the arithmetic derivative.

2, 5, 6, 7, 8, 10, 11, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 24, 26, 28, 29, 30, 31, 32, 33, 34, 37, 38, 39, 41, 42, 43, 44, 45, 46, 47, 50, 51, 52, 53, 54, 57, 58, 59, 60, 61, 62, 63, 66, 67, 68, 69, 70, 71, 72, 73, 74, 76, 78, 79, 80, 82, 83, 84, 86, 87, 89, 90, 92, 93, 94, 96, 97, 98, 99, 101, 102, 103, 106

Offset: 1

Author

Antti Karttunen, Jun 29 2024

Keywords

• nonn

Links

• Antti Karttunen, Table of n, a(n) for n = 1..12000

Crossrefs

Cf. A113177, A328845, A374107, A374108 (complement).

Indices of odd terms in A374106.

Union of A373587 and A374047.

Programs

PARI

isA374109(n) = !A374107(n);