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.

A216340 Number of horizontal and antidiagonal neighbor colorings of the even squares of a 4Xn array with new integer colors introduced in row major order.

Table of values

n a(n)
1 2
2 10
3 52
4 726
5 12840
6 373780
7 12297870
8 580853761
9 29562890980
10 2004648246554
11 142953068558998
12 12954739605661928
13 1216988850964527370
14 140585911310155419266
15 16679506383419809650408
16 2374936932537133281235971

List of values

[2, 10, 52, 726, 12840, 373780, 12297870, 580853761, 29562890980, 2004648246554, 142953068558998, 12954739605661928, 1216988850964527370, 140585911310155419266, 16679506383419809650408, 2374936932537133281235971]

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

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