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.

A144339 Second column (m=2) of triangle S2hat(-4) = A144285.

Table of values

n a(n)
0 1
1 4
2 52
3 648
4 12888
5 286272
6 8182944
7 266366016
8 10191545280
9 437925035520
10 21158411936256
11 1127285473434624
12 65884689657464832
13 4181915450891501568
14 286704379021188538368
15 21099339893878107144192
16 1659252422924430692327424
17 138827012602215571388891136

List of values

[1, 4, 52, 648, 12888, 286272, 8182944, 266366016, 10191545280, 437925035520, 21158411936256, 1127285473434624, 65884689657464832, 4181915450891501568, 286704379021188538368, 21099339893878107144192, 1659252422924430692327424, 138827012602215571388891136]

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

Content is available under The OEIS End-User License Agreement.