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.

A301309 G.f.: Sum_{n>=0} ( (1+x)^n + (1-x)^n )^n / 2^(2*n+1), an even function.

Table of values

n a(n)
0 1
1 5
2 418
3 97248
4 44494788
5 33701146040
6 38158722166012
7 60370440881763184
8 127193089522406873576
9 344265367844128036044688
10 1164086577885251318385747568
11 4808913945776510766505317067088
12 23831677319262549731059823149874928
13 139543211306816620890086979219586374480
14 953076439362156646686630002626476525309552

List of values

[1, 5, 418, 97248, 44494788, 33701146040, 38158722166012, 60370440881763184, 127193089522406873576, 344265367844128036044688, 1164086577885251318385747568, 4808913945776510766505317067088, 23831677319262549731059823149874928, 139543211306816620890086979219586374480, 953076439362156646686630002626476525309552]