A074283 Sum of the aliquot divisors of n-th Fibonacci number.

0, 0, 1, 1, 1, 7, 1, 11, 20, 17, 1, 259, 1, 43, 506, 549, 1, 2816, 151, 5331, 6778, 289, 1, 110880, 18037, 755, 124342, 155949, 1, 1310680, 2975, 1213179, 1821962, 5169, 2697343, 33280848, 506383, 1416031, 32030858, 106878261, 62159, 295708904, 1

Offset

1,6

Links

Amiram Eldar, Table of n, a(n) for n = 1..1408 (terms 1..250 from Paolo P. Lava)

Formula

a(n) = A001065(A000045(n)). - Omar E. Pol, Dec 20 2008

a(n) = A063477(n) - A000045(n). - Amiram Eldar, Aug 27 2020

Example

a(6) = 7 because the sum of the aliquot divisors of the 6th Fibonacci number (i.e. 8) is 1 + 2 + 4 = 7.

Mathematica

Table[Total[Most[Divisors[n]]], {n, Fibonacci[Range[50]]}] (* Harvey P. Dale, Dec 12 2013 *)

Crossrefs

Cf. A000045, A001065, A063477. - Omar E. Pol, Dec 20 2008

Sequence in context: A124886 A061195 A232111 * A331337 A211836 A165949

Adjacent sequences: A074280 A074281 A074282 * A074284 A074285 A074286

Keyword

nonn

Author

Shyam Sunder Gupta, Sep 21 2002

Status

approved