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.

A303563 G.f. A(x) satisfies: 0 = [x^(n-1)] 1 / A(x)^(n^2-n+1) for n>2.

Table of values

n a(n)
0 1
1 1
2 4
3 21
4 132
5 840
6 6798
7 26187
8 982794
9 -23411010
10 1229958800
11 -63402693620
12 3727765284702
13 -241049598495378
14 17055417754898346
15 -1310070866036785677
16 108572840286328367574
17 -9656468474317765916970
18 917437511140569561151848
19 -92733586081750860360411954
20 9936829948115042380890921976
21 -1125196473407637775842431681496
22 134258639558360961220987962351588

List of values

[1, 1, 4, 21, 132, 840, 6798, 26187, 982794, -23411010, 1229958800, -63402693620, 3727765284702, -241049598495378, 17055417754898346, -1310070866036785677, 108572840286328367574, -9656468474317765916970, 917437511140569561151848, -92733586081750860360411954, 9936829948115042380890921976, -1125196473407637775842431681496, 134258639558360961220987962351588]

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

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