cp's OEIS Frontend

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.

A145756 a(n) = ((2^prime(n+2)-2)/prime(n+2))/3, where n >= 1.

Table of values

n a(n)
1 2
2 6
3 62
4 210
5 2570
6 9198
7 121574
8 6170930
9 23091222
10 1238188770
11 17878237850
12 68186767614
13 998138215286
14 56649051916610
15 3256840408493918
16 12600235023025650
17 734198769102867726
18 11085367330679918342

List of values

[2, 6, 62, 210, 2570, 9198, 121574, 6170930, 23091222, 1238188770, 17878237850, 68186767614, 998138215286, 56649051916610, 3256840408493918, 12600235023025650, 734198769102867726, 11085367330679918342]

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

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