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.

A318119 Constant term in the expansion of (Sum_{k=0..n} k*(x^k + x^(-k)))^5.

Table of values

n a(n)
0 0
1 0
2 560
3 14240
4 146680
5 922680
6 4226040
7 15492680
8 48144680
9 131678360
10 325322360
11 739761880
12 1570082800
13 3143824320
14 5988841040
15 10926565040
16 19197225520
17 32624627920
18 53829216160
19 86499340720
20 135731931720
21 208455129960
22 313946860040
23 464464838200

List of values

[0, 0, 560, 14240, 146680, 922680, 4226040, 15492680, 48144680, 131678360, 325322360, 739761880, 1570082800, 3143824320, 5988841040, 10926565040, 19197225520, 32624627920, 53829216160, 86499340720, 135731931720, 208455129960, 313946860040, 464464838200]

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

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