A181090 Sum_{d|F(n)} d^3, where F(n) are the Fibonacci numbers.

1, 1, 9, 28, 126, 585, 2198, 9632, 44226, 167832, 704970, 3543517, 12649338, 53609220, 257397588, 1000032768, 4073003174, 19720373400, 73088555292, 323884878912, 1476102415284, 5555586582000, 23533806109394

Offset

1,3

Links

Table of n, a(n) for n=1..23.

Example

a(6) = 585 is in the sequence because Fibonacci(6) = 8, and 1^3 + 2^3 + 4^3 + 8^3 = 585.

Mathematica

Table[Plus@@(Transpose[DivisorSigma[3, Fibonacci[n]]][[1]]), {n, 30}]

Crossrefs

Cf. A000045, A063477, A063478.

Sequence in context: A349547 A085292 A198059 * A073706 A226976 A042501

Adjacent sequences: A181087 A181088 A181089 * A181091 A181092 A181093

Keyword

nonn

Author

Michel Lagneau, Oct 02 2010

Status

approved