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.

A250688 Number of (n+1)X(5+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 47002
2 249512
3 1315446
4 6671458
5 31728758
6 143136866
7 617657415
8 2571646112
9 10412478449
10 41269021168
11 160968910027
12 620573782940
13 2373117015149
14 9027885707796
15 34248252841075
16 129817387985168
17 492449247898701

List of values

[47002, 249512, 1315446, 6671458, 31728758, 143136866, 617657415, 2571646112, 10412478449, 41269021168, 160968910027, 620573782940, 2373117015149, 9027885707796, 34248252841075, 129817387985168, 492449247898701]

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

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