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.

A372413 Coefficient of x^n in the expansion of ( (1-x+x^3) / (1-x) )^n.

Table of values

n a(n)
0 1
1 0
2 0
3 3
4 4
5 5
6 21
7 49
8 92
9 237
10 595
11 1331
12 3169
13 7787
14 18487
15 44108
16 107036
17 258349
18 622371
19 1508239
20 3658679
21 8869465
22 21543005
23 52399612
24 127497281
25 310487855
26 756858661
27 1846060464
28 4505442967
29 11003284052
30 26887642756
31 65735882819
32 160795695676

List of values

[1, 0, 0, 3, 4, 5, 21, 49, 92, 237, 595, 1331, 3169, 7787, 18487, 44108, 107036, 258349, 622371, 1508239, 3658679, 8869465, 21543005, 52399612, 127497281, 310487855, 756858661, 1846060464, 4505442967, 11003284052, 26887642756, 65735882819, 160795695676]

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

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