This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A363829 #24 Oct 22 2023 11:51:00
%S A363829 1,3,6,28,30,144,183,1080,1188,3780,5742,52416,33462,131760,251100,
%T A363829 1290096,1145124,5702400,6804204,42336000,50176404,146352096,
%U A363829 226041700,2333111040,1357893000,4818528000,9395060400,47385112320,44560482150,251337038400,264178169640
%N A363829 Sum of the divisors of A000129(n) (Pell numbers).
%H A363829 Amiram Eldar, <a href="/A363829/b363829.txt">Table of n, a(n) for n = 1..630</a> (calculated using Jon E. Schoenfield's a-file at A000129)
%F A363829 a(n) = sigma(Pell(n)) = A000203(A000129(n)).
%e A363829 a(9)=1188 because Pell(9)=985 has divisors {1, 5, 197, 985}.
%t A363829 DivisorSigma[1, LinearRecurrence[{2, 1}, {1, 2}, 32]] (* _Amiram Eldar_, Oct 19 2023 *)
%Y A363829 Cf. A000129, A000203, A272040, A363831, A363833, A364818, A364820.
%K A363829 nonn
%O A363829 1,2
%A A363829 _Tyler Busby_, Oct 19 2023