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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.

A300591 O.g.f. A(x) satisfies: [x^n] exp( n^2 * A(x) ) = n^2 * [x^(n-1)] exp( n^2 * A(x) ) for n>=1.

Table of values

n a(n)
1 1
2 2
3 27
4 736
5 30525
6 1715454
7 123198985
8 10931897664
9 1172808994833
10 149774206572050
11 22487782439633786
12 3927856758905547936
13 790620718368726490063
14 181836026214536919343314
15 47416473117145116482171400
16 13920906749656695367066255360
17 4572270908185359745686931830057
18 1670388578072378805032472463218378
19 675225859431899136993903503004997481
20 300576566118865697499246162737030656800

List of values

[1, 2, 27, 736, 30525, 1715454, 123198985, 10931897664, 1172808994833, 149774206572050, 22487782439633786, 3927856758905547936, 790620718368726490063, 181836026214536919343314, 47416473117145116482171400, 13920906749656695367066255360, 4572270908185359745686931830057, 1670388578072378805032472463218378, 675225859431899136993903503004997481, 300576566118865697499246162737030656800]

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

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