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.

A188700 Number of n X 3 binary arrays without the pattern 0 0 diagonally or vertically.

Table of values

n a(n)
1 8
2 21
3 90
4 304
5 1141
6 4084
7 14925
8 54049
9 196508
10 713225
11 2590574
12 9406448
13 34159833
14 124045128
15 450458681
16 1635781681
17 5940155616
18 21570956189
19 78332387394
20 284454730240
21 1032963629229
22 3751084683708
23 13621618755397

List of values

[8, 21, 90, 304, 1141, 4084, 14925, 54049, 196508, 713225, 2590574, 9406448, 34159833, 124045128, 450458681, 1635781681, 5940155616, 21570956189, 78332387394, 284454730240, 1032963629229, 3751084683708, 13621618755397]

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

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