A374050 Numbers k for which A328846(k) is odd, where A328846 is the second Fibonacci based variant of arithmetic derivative.

3, 5, 11, 13, 19, 21, 23, 27, 31, 35, 37, 43, 45, 47, 51, 59, 61, 71, 73, 75, 77, 83, 85, 87, 89, 91, 99, 101, 103, 109, 113, 117, 123, 125, 131, 133, 137, 145, 147, 149, 151, 159, 161, 163, 165, 167, 171, 179, 181, 187, 189, 193, 195, 197, 201, 205, 207, 211, 217, 221, 223, 229, 233, 237, 241, 243, 245, 251, 259

Offset: 1

Author

Antti Karttunen, Jun 28 2024

Keywords

• nonn

Links

• Antti Karttunen, Table of n, a(n) for n = 1..12000
• Index entries for sequences related to prime indices in the factorization of n

Crossrefs

Indices of 0's in A374048, which is the characteristic function of complement, A374049.

Cf. A328846.

Cf. also A374047.

Programs

PARI

isA374050(n) = !A374048(n);