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.

A217452 Number of n X 3 arrays of the minimum value of corresponding elements and their horizontal and vertical neighbors in a random 0..2 n X 3 array.

Table of values

n a(n)
1 9
2 69
3 613
4 4361
5 35067
6 271863
7 2122623
8 16577231
9 129398981
10 1010161409
11 7886865189
12 61570433261
13 480690831603
14 3752745812035
15 29297882184787
16 228729463311571
17 1785699822954649
18 13941021624348057
19 108838075075791297

List of values

[9, 69, 613, 4361, 35067, 271863, 2122623, 16577231, 129398981, 1010161409, 7886865189, 61570433261, 480690831603, 3752745812035, 29297882184787, 228729463311571, 1785699822954649, 13941021624348057, 108838075075791297]

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

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