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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.

A055226 a(n) = floor(sqrt(n!)).

Table of values

n a(n)
0 1
1 1
2 1
3 2
4 4
5 10
6 26
7 70
8 200
9 602
10 1904
11 6317
12 21886
13 78911
14 295259
15 1143535
16 4574143
17 18859677
18 80014834
19 348776576
20 1559776268
21 7147792818
22 33526120082
23 160785623545
24 787685471322
25 3938427356614
26 20082117944245
27 104349745809073
28 552166953567228
29 2973510046012910
30 16286585271694955
31 90679869067935485

List of values

[1, 1, 1, 2, 4, 10, 26, 70, 200, 602, 1904, 6317, 21886, 78911, 295259, 1143535, 4574143, 18859677, 80014834, 348776576, 1559776268, 7147792818, 33526120082, 160785623545, 787685471322, 3938427356614, 20082117944245, 104349745809073, 552166953567228, 2973510046012910, 16286585271694955, 90679869067935485]

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

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