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.

A372460 Coefficient of x^n in the expansion of 1 / ( (1-x) * (1-x-x^2) )^(2*n).

Table of values

n a(n)
0 1
1 4
2 40
3 442
4 5136
5 61424
6 748462
7 9240480
8 115194720
9 1446820588
10 18279806600
11 232071505120
12 2958062657550
13 37831613904036
14 485233557808704
15 6239148779539472
16 80397210629541696
17 1037970502613332320
18 13423439565585274180
19 173859642721737225552

List of values

[1, 4, 40, 442, 5136, 61424, 748462, 9240480, 115194720, 1446820588, 18279806600, 232071505120, 2958062657550, 37831613904036, 485233557808704, 6239148779539472, 80397210629541696, 1037970502613332320, 13423439565585274180, 173859642721737225552]

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

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