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.

A250436 Number of (n+1)X(n+1) 0..2 arrays with nondecreasing sum of every two consecutive values in every row and column.

Table of values

n a(n)
1 81
2 2160
3 160000
4 8750000
5 937890625
6 74118870000
7 9682651996416
8 958582547645184
9 141763707879526656
10 16346105372357849088
11 2632478657451209588736
12 338880211548064890612480

List of values

[81, 2160, 160000, 8750000, 937890625, 74118870000, 9682651996416, 958582547645184, 141763707879526656, 16346105372357849088, 2632478657451209588736, 338880211548064890612480]

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

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