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A280108
Sum of odd divisors of Lucas(n).
1
1, 4, 1, 8, 12, 13, 30, 48, 20, 168, 200, 192, 522, 1128, 384, 2208, 3572, 4320, 9350, 17296, 6360, 54208, 64680, 52992, 186048, 361928, 115600, 826728, 1169400, 1377012, 3010350, 4876416, 1980400, 17256768, 23639040, 19906944, 54018522, 116538408
OFFSET
1,2
LINKS
FORMULA
a(n) = A000593(A000032(n)).
MATHEMATICA
a[n_]:=Select[Divisors[LucasL[n]], OddQ]//Total; Table[a[n], {n, 1, 40}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Vincenzo Librandi, Jan 06 2017
STATUS
approved