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.

A171450 Sequence with Hankel transform given by 2^C(n,2)*2^floor(n/3).

Table of values

n a(n)
0 1
1 1
2 2
3 5
4 15
5 54
6 231
7 1133
8 6082
9 34397
10 200063
11 1180798
12 7023103
13 41946973
14 251144922
15 1505966757
16 9040214223
17 54314351878
18 326565963479
19 1964805696525
20 11828911080050
21 71258494789421
22 429525155047263
23 2590571415647886

List of values

[1, 1, 2, 5, 15, 54, 231, 1133, 6082, 34397, 200063, 1180798, 7023103, 41946973, 251144922, 1505966757, 9040214223, 54314351878, 326565963479, 1964805696525, 11828911080050, 71258494789421, 429525155047263, 2590571415647886]

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

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