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.

A203358 Number of n X 4 binary arrays with every 1 immediately preceded by 0 to the left or above.

Table of values

n a(n)
1 5
2 61
3 565
4 5677
5 55517
6 547897
7 5390325
8 53087833
9 522656405
10 5146261573
11 50669762053
12 498898530085
13 4912170264077
14 48365462156161
15 476208363192837
16 4688768398640689
17 46165815830098469
18 454550623943557645

List of values

[5, 61, 565, 5677, 55517, 547897, 5390325, 53087833, 522656405, 5146261573, 50669762053, 498898530085, 4912170264077, 48365462156161, 476208363192837, 4688768398640689, 46165815830098469, 454550623943557645]

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

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