%I #10 Oct 23 2023 05:22:09

%S 1,1,3,7,8,14,60,84,121,150,414,1560,1352,2304,7239,12480,10713,22400,

%T 67032,154056,166560,334880,770160,1322090,2020564,3712800,8461404,

%U 21427200,17008752,37733696,154277568,219104032,249664896,341958960,1575703584,1997069256

%N Sum of the divisors of A000073(n) (tribonacci numbers).

%H Amiram Eldar, <a href="/A366783/b366783.txt">Table of n, a(n) for n = 2..365</a>

%F a(n) = A000203(A000073(n)).

%e a(8)=60 because the 8th tribonacci number 24 has divisors {1, 2, 3, 4, 6, 8, 12, 24}.

%t DivisorSigma[1, LinearRecurrence[{1, 1, 1}, {1, 1, 2}, 36]] (* _Amiram Eldar_, Oct 23 2023 *)

%Y Cf. A000203, A000073, A366780, A366781, A366782, A063477.

%K nonn

%O 2,3

%A _Sean A. Irvine_, Oct 22 2023