A341350 Numbers k for which A254049(k) [= A048673(2k-1)] is a multiple of 3.

2, 4, 7, 8, 10, 12, 14, 17, 18, 19, 22, 24, 26, 27, 32, 33, 34, 38, 39, 40, 42, 44, 47, 48, 49, 52, 55, 58, 59, 60, 62, 64, 66, 68, 70, 72, 74, 82, 83, 84, 86, 87, 88, 89, 91, 92, 93, 97, 102, 104, 105, 107, 108, 109, 110, 111, 112, 115, 117, 118, 121, 122, 126, 127, 128, 129, 132, 133, 134, 137, 139, 142, 144, 149

Offset

1,1

Comments

Numbers k for which A292251(2k-1) > 0.

Links

Antti Karttunen, Table of n, a(n) for n = 1..16399

Index entries for sequences computed from indices in prime factorization

Prog

(PARI)
A003961(n) = { my(f=factor(n)); for (i=1, #f~, f[i, 1] = nextprime(f[i, 1]+1)); factorback(f); }; \\ From A003961
A341346(n) = (((A003961(n+n-1)+1)/2)%3);
isA341350(n) = (0==A341346(n));

Crossrefs

Positions of zeros in A341346.

Cf. A003961, A048673, A254049, A292251, A341349 (complement).

Sequence in context: A056231 A248637 A131346 * A047540 A116478 A207829

Adjacent sequences: A341347 A341348 A341349 * A341351 A341352 A341353

Keyword

nonn

Author

Antti Karttunen, Feb 10 2021

Status

approved