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.

A250698 Number of (7+1)X(n+1) 0..3 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.

Table of values

n a(n)
1 1005121
2 7249825
3 37322413
4 160222342
5 617657415
6 2224688673
7 7662909389
8 25622390948
9 84040600357
10 272488719033
11 878393149045
12 2826884204762
13 9107833801683
14 29426182298097
15 95415082577317
16 310574007541112

List of values

[1005121, 7249825, 37322413, 160222342, 617657415, 2224688673, 7662909389, 25622390948, 84040600357, 272488719033, 878393149045, 2826884204762, 9107833801683, 29426182298097, 95415082577317, 310574007541112]

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

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