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.

A250281 Number of length 6+1 0..n arrays with the sum of the squares of adjacent differences multiplied by some arrangement of +-1 equal to zero.

Table of values

n a(n)
1 64
2 843
3 4412
4 17885
5 51884
6 130335
7 281552
8 564985
9 1028832
10 1775463
11 2887804
12 4568929
13 6917108
14 10184331
15 14530168
16 20394445
17 27913864
18 37658171
19 49810736
20 65176853
21 83924392
22 106914955
23 134435648
24 168004421
25 207572064

List of values

[64, 843, 4412, 17885, 51884, 130335, 281552, 564985, 1028832, 1775463, 2887804, 4568929, 6917108, 10184331, 14530168, 20394445, 27913864, 37658171, 49810736, 65176853, 83924392, 106914955, 134435648, 168004421, 207572064]

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

Content is available under The OEIS End-User License Agreement.