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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.

A316663 a(n) = floor(sqrt((2*n)^(n+1))).

Table of values

n a(n)
0 0
1 2
2 8
3 36
4 181
5 1000
6 5985
7 38416
8 262144
9 1889568
10 14310835
11 113379904
12 936209559
13 8031810176
14 71397866601
15 656100000000
16 6219777023950
17 60716992766464
18 609359740010496
19 6278211847988224
20 66317769195774370
21 717368321110468608
22 7937902853812916501
23 89762301673555234816
24 1036371513660502339855

List of values

[0, 2, 8, 36, 181, 1000, 5985, 38416, 262144, 1889568, 14310835, 113379904, 936209559, 8031810176, 71397866601, 656100000000, 6219777023950, 60716992766464, 609359740010496, 6278211847988224, 66317769195774370, 717368321110468608, 7937902853812916501, 89762301673555234816, 1036371513660502339855]

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

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