A331976 Odd integers m that divide the sum of the first m nonzero Fibonacci numbers.

1, 77, 319, 323, 1517, 3021, 4757, 6479, 7221, 8159, 8229, 9797, 11663, 12597, 13629, 13869, 14429, 14949, 16637, 18407, 19043, 19437, 23407, 24947, 25437, 30049, 30621, 34943, 34989, 35207, 39203, 43677, 44099, 47519, 51983, 53663, 55221, 65471, 70221, 77837, 78089, 79547

Offset

1,2

Comments

Not all terms are squarefree, for instance 13869, 14949, 43677, 93357, ... are not.

A subsequence of A124456, missing just the even terms A124456({2, 155, 397, 469, ...}) = {2, 758624, 7057466, 10805846, ...}. - M. F. Hasler, Feb 06 2020

Links

Giovanni Resta, Table of n, a(n) for n = 1..10000

Daniel Yaqubi and Amirali Fatehizadeh, Some results on average of Fibonacci and Lucas sequences, arXiv:2001.11839 [math.CO], 2020.

Formula

Equals A124456 without even terms. - M. F. Hasler, Feb 06 2020

Prog

(PARI) forstep(n=1, oo, 2, is_A111035(n) && print1(n", ")) \\ M. F. Hasler, Feb 06 2020

Crossrefs

Odd terms in A111035, A124456.

Sequence in context: A298102 A158767 A158771 * A020206 A020304 A154058

Adjacent sequences: A331973 A331974 A331975 * A331977 A331978 A331979

Keyword

nonn

Author

Michel Marcus, Feb 03 2020

Status

approved