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.

A208551 Number of n X 4 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 0 1 1 vertically.

Table of values

n a(n)
1 10
2 100
3 330
4 1089
5 2508
6 5776
7 11020
8 21025
9 35670
10 60516
11 94710
12 148225
13 218680
14 322624
15 454968
16 641601
17 873090
18 1188100
19 1570690
20 2076481
21 2680260
22 3459600
23 4376580
24 5536609
25 6884878
26 8561476
27 10489710
28 12852225
29 15544560
30 18800896

List of values

[10, 100, 330, 1089, 2508, 5776, 11020, 21025, 35670, 60516, 94710, 148225, 218680, 322624, 454968, 641601, 873090, 1188100, 1570690, 2076481, 2680260, 3459600, 4376580, 5536609, 6884878, 8561476, 10489710, 12852225, 15544560, 18800896]

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

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