%I #30 Aug 09 2022 07:07:50

%S 1,1,3,12,72,744,10416,270816,9906624,614210688,55278961920,

%T 8354817757440,1955027355240960,766650012876633600,

%U 478623425047744204800,492420437498707277414400,786887859122934229308211200,2148247421904894243053912064000

%N a(n) is the sum of the positive divisors of A003266(n).

%H Amiram Eldar, <a href="/A260622/b260622.txt">Table of n, a(n) for n = 1..98</a>

%F a(n) = A000203(A003266(n)).

%t a[n_] := DivisorSigma[1, Fibonorial[n]]; Array[a, 18] (* _Amiram Eldar_, Aug 09 2022 *)

%o (PARI) a(n) = sigma(prod(k=1, n, fibonacci(k)));

%Y Cf. A000203, A003266, A272122.

%K nonn

%O 1,3

%A _Altug Alkan_, Apr 30 2016