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.

A370245 Coefficient of x^n in the expansion of ( 1/(1-x)^2 * (1+x^2)^3 )^n.

Table of values

n a(n)
0 1
1 2
2 16
3 110
4 828
5 6352
6 49696
7 393668
8 3148316
9 25362992
10 205519616
11 1673272702
12 13677016932
13 112165564656
14 922490228032
15 7605558361960
16 62839438825244
17 520180768020464
18 4313251202569216
19 35818392770702104
20 297846498752214128
21 2479748570715505472

List of values

[1, 2, 16, 110, 828, 6352, 49696, 393668, 3148316, 25362992, 205519616, 1673272702, 13677016932, 112165564656, 922490228032, 7605558361960, 62839438825244, 520180768020464, 4313251202569216, 35818392770702104, 297846498752214128, 2479748570715505472]

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

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