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.

A259246 Number of (n+1)X(4+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0000 0011 or 0111.

Table of values

n a(n)
1 111
2 581
3 2816
4 14425
5 71313
6 361728
7 1803859
8 9106657
9 45601304
10 229700941
11 1152550829
12 5799573000
13 29129216479
14 146507741197
15 736226561792
16 3702139968817
17 18608625262249
18 93565783612448
19 470365315223067

List of values

[111, 581, 2816, 14425, 71313, 361728, 1803859, 9106657, 45601304, 229700941, 1152550829, 5799573000, 29129216479, 146507741197, 736226561792, 3702139968817, 18608625262249, 93565783612448, 470365315223067]

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

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