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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.

A216343 Number of horizontal and antidiagonal neighbor colorings of the even squares of a 7Xn array with new integer colors introduced in row major order.

Table of values

n a(n)
1 15
2 409
3 115975
4 18378580
5 41521045376
6 20358402201792
7 148049849072167133
8 152834688133255075552
9 2562708952364833106990692

List of values

[15, 409, 115975, 18378580, 41521045376, 20358402201792, 148049849072167133, 152834688133255075552, 2562708952364833106990692]

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

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