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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.

A104344 a(n) = Sum_{k=1..n} k!^2.

Table of values

n a(n)
1 1
2 5
3 41
4 617
5 15017
6 533417
7 25935017
8 1651637417
9 133333531817
10 13301522971817
11 1606652445211817
12 231049185247771817
13 39006837228880411817
14 7639061293780877851817
15 1717651314017980301851817
16 439480788011413032845851817
17 126953027293558583218061851817

List of values

[1, 5, 41, 617, 15017, 533417, 25935017, 1651637417, 133333531817, 13301522971817, 1606652445211817, 231049185247771817, 39006837228880411817, 7639061293780877851817, 1717651314017980301851817, 439480788011413032845851817, 126953027293558583218061851817]

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

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