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.

A250681 Number of (5+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 53032
2 1185860
3 22408818
4 379890972
5 5803025694
6 81461365899
7 1070591197687
8 13342424067588
9 159420803863398
10 1840705572880672
11 20670321639041067
12 226864703962443259
13 2443264607642994051
14 25901583586093676145

List of values

[53032, 1185860, 22408818, 379890972, 5803025694, 81461365899, 1070591197687, 13342424067588, 159420803863398, 1840705572880672, 20670321639041067, 226864703962443259, 2443264607642994051, 25901583586093676145]

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

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