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.

A250569 Number of (n+2) X (3+2) 0..1 arrays with nondecreasing maximum of every three consecutive values in every row and column.

Table of values

n a(n)
1 21952
2 463006
3 9583440
4 194160522
5 3844025984
6 75733658665
7 1486288137310
8 29093999130722
9 568992945964954
10 11121085195129708
11 217289681422138350
12 4244862050968522642
13 82917728735945546896
14 1619605399294091536443

List of values

[21952, 463006, 9583440, 194160522, 3844025984, 75733658665, 1486288137310, 29093999130722, 568992945964954, 11121085195129708, 217289681422138350, 4244862050968522642, 82917728735945546896, 1619605399294091536443]

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

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