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.

A189247 Number of n X 2 array permutations with each element making zero or one king moves.

Table of values

n a(n)
1 2
2 24
3 152
4 1168
5 8448
6 62272
7 456320
8 3350016
9 24579584
10 180376576
11 1323614208
12 9712930816
13 71274930176
14 523026923520
15 3838053810176
16 28164247060480
17 206673697308672
18 1516604287614976
19 11129082140426240
20 81666965136998400

List of values

[2, 24, 152, 1168, 8448, 62272, 456320, 3350016, 24579584, 180376576, 1323614208, 9712930816, 71274930176, 523026923520, 3838053810176, 28164247060480, 206673697308672, 1516604287614976, 11129082140426240, 81666965136998400]

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

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