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.

A208253 Number of n X 3 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than one of its immediate leftward or upward neighbors.

Table of values

n a(n)
1 5
2 96
3 2040
4 43344
5 920928
6 19566912
7 415737216
8 8833148160
9 187677464064
10 3987573838848
11 84723785029632
12 1800122089230336
13 38247105402593280
14 812634365429366784
15 17266002353004576768
16 366849901919230820352

List of values

[5, 96, 2040, 43344, 920928, 19566912, 415737216, 8833148160, 187677464064, 3987573838848, 84723785029632, 1800122089230336, 38247105402593280, 812634365429366784, 17266002353004576768, 366849901919230820352]

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

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