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.

A213805 Number of 7 X 7 0..n symmetric arrays with all rows summing to floor(n*7/2).

Table of values

n a(n)
0 1
1 35150
2 133721189
3 46259653191
4 4893373431575
5 212962858290086
6 5406415387421647
7 87098380004205128
8 1034209337638242207
9 9323807379913081007
10 69112259378483785503
11 425995640129266136995
12 2291562702094516094937
13 10801522912361264775797
14 46064488469672007773725

List of values

[1, 35150, 133721189, 46259653191, 4893373431575, 212962858290086, 5406415387421647, 87098380004205128, 1034209337638242207, 9323807379913081007, 69112259378483785503, 425995640129266136995, 2291562702094516094937, 10801522912361264775797, 46064488469672007773725]

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

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