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.

A183715 1/20 of the number of (n+1) X 6 0..4 arrays with every 2X2 subblock strictly increasing clockwise or counterclockwise with one decrease.

Table of values

n a(n)
1 70
2 559
3 4012
4 30113
5 224640
6 1683197
7 12606120
8 94463507
9 707826798
10 5304230928
11 39748015308
12 297860692491
13 2232084261366
14 16726639262465
15 125344918169856
16 939301219166473
17 7038871324696794
18 52747415646208987
19 395274995490521924

List of values

[70, 559, 4012, 30113, 224640, 1683197, 12606120, 94463507, 707826798, 5304230928, 39748015308, 297860692491, 2232084261366, 16726639262465, 125344918169856, 939301219166473, 7038871324696794, 52747415646208987, 395274995490521924]

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

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