A363829 Sum of the divisors of A000129(n) (Pell numbers).

1, 3, 6, 28, 30, 144, 183, 1080, 1188, 3780, 5742, 52416, 33462, 131760, 251100, 1290096, 1145124, 5702400, 6804204, 42336000, 50176404, 146352096, 226041700, 2333111040, 1357893000, 4818528000, 9395060400, 47385112320, 44560482150, 251337038400, 264178169640

Offset: 1

Author

Tyler Busby, Oct 19 2023

Keywords

• nonn

Examples

			a(9)=1188 because Pell(9)=985 has divisors {1, 5, 197, 985}.
		

Links

• Amiram Eldar, Table of n, a(n) for n = 1..630 (calculated using Jon E. Schoenfield's a-file at A000129)

Crossrefs

Cf. A000129, A000203, A272040, A363831, A363833, A364818, A364820.

Programs

Mathematica

DivisorSigma[1, LinearRecurrence[{2, 1}, {1, 2}, 32]] (* Amiram Eldar, Oct 19 2023 *)

Formula

a(n) = sigma(Pell(n)) = A000203(A000129(n)).