cp's OEIS Frontend

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.

A296045 a(n) = [x^n] Product_{k>=1} ((1 + x^(2*k-1))/(1 - x^(2*k)))^n.

Table of values

n a(n)
0 1
1 1
2 3
3 13
4 55
5 231
6 981
7 4222
8 18351
9 80320
10 353453
11 1562364
12 6932185
13 30856541
14 137725710
15 616190583
16 2762605791
17 12408541299
18 55825435656
19 251523510045
20 1134741006825
21 5125453110196
22 23175983361270
23 104899547541255
24 475228898015025
25 2154737528486881
26 9777332125043577

List of values

[1, 1, 3, 13, 55, 231, 981, 4222, 18351, 80320, 353453, 1562364, 6932185, 30856541, 137725710, 616190583, 2762605791, 12408541299, 55825435656, 251523510045, 1134741006825, 5125453110196, 23175983361270, 104899547541255, 475228898015025, 2154737528486881, 9777332125043577]