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.

A266134 Number of 4Xn integer arrays with each element equal to the number of horizontal, diagonal and antidiagonal neighbors exactly one smaller than itself.

Table of values

n a(n)
1 1
2 61
3 385
4 572
5 3851
6 44623
7 347576
8 1650710
9 12360130
10 106235031
11 807578953
12 5406175833
13 41246496374
14 328408364493
15 2509089355110
16 18435763834038
17 141054581587168
18 1100340622468942
19 8442342552511565
20 63751061176641632

List of values

[1, 61, 385, 572, 3851, 44623, 347576, 1650710, 12360130, 106235031, 807578953, 5406175833, 41246496374, 328408364493, 2509089355110, 18435763834038, 141054581587168, 1100340622468942, 8442342552511565, 63751061176641632]

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

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