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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.

A261652 Expansion of Product_{k>=0} ((1+x^(4*k+1))/(1-x^(4*k+1)))^3.

Table of values

n a(n)
0 1
1 6
2 18
3 38
4 66
5 108
6 182
7 306
8 486
9 728
10 1068
11 1578
12 2318
13 3312
14 4614
15 6388
16 8862
17 12192
18 16488
19 22038
20 29400
21 39156
22 51702
23 67554
24 87810
25 113982
26 147384
27 189200
28 241446
29 307356
30 390408
31 493662
32 621006
33 778712
34 974628
35 1216284
36 1511756
37 1872840
38 2315538

List of values

[1, 6, 18, 38, 66, 108, 182, 306, 486, 728, 1068, 1578, 2318, 3312, 4614, 6388, 8862, 12192, 16488, 22038, 29400, 39156, 51702, 67554, 87810, 113982, 147384, 189200, 241446, 307356, 390408, 493662, 621006, 778712, 974628, 1216284, 1511756, 1872840, 2315538]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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