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.

A219306 Unchanging value maps: number of nX4 binary arrays indicating the locations of corresponding elements unequal to no horizontal or vertical neighbor in a random 0..2 nX4 array.

Table of values

n a(n)
1 7
2 51
3 423
4 3334
5 25647
6 200376
7 1574278
8 12334824
9 96480571
10 755212375
11 5914093280
12 46306103745
13 362524633360
14 2838264260603
15 22221912955624
16 173982894127917
17 1362160216940837
18 10664747935404835
19 83497581682654109

List of values

[7, 51, 423, 3334, 25647, 200376, 1574278, 12334824, 96480571, 755212375, 5914093280, 46306103745, 362524633360, 2838264260603, 22221912955624, 173982894127917, 1362160216940837, 10664747935404835, 83497581682654109]

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

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