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.

A220762 Number of 2Xn arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random 0..3 2Xn array.

Table of values

n a(n)
1 16
2 28
3 268
4 708
5 4766
6 15724
7 88434
8 331024
9 1683150
10 6777522
11 32549034
12 136712744
13 635507042
14 2735089882
15 12478735816
16 54465787400
17 245847114384
18 1081768683254
19 4852872926630
20 21453251299430
21 95899957070006

List of values

[16, 28, 268, 708, 4766, 15724, 88434, 331024, 1683150, 6777522, 32549034, 136712744, 635507042, 2735089882, 12478735816, 54465787400, 245847114384, 1081768683254, 4852872926630, 21453251299430, 95899957070006]

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

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