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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.

A355468 Expansion of Sum_{k>=0} (k^2 * x/(1 - k^2 * x))^k.

Table of values

n a(n)
0 1
1 1
2 17
3 858
4 85988
5 14318320
6 3570592512
7 1245401343760
8 578840603221568
9 345763649636940672
10 258099498410703320960
11 235426611021544158413824
12 257654470061373320338925568
13 333210260028337620911268462592

List of values

[1, 1, 17, 858, 85988, 14318320, 3570592512, 1245401343760, 578840603221568, 345763649636940672, 258099498410703320960, 235426611021544158413824, 257654470061373320338925568, 333210260028337620911268462592]

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

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