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.

A331655 Number of binary matrices with n distinct columns and any number of distinct nonzero rows with 4 ones in every column and rows in decreasing lexicographic order.

Table of values

n a(n)
0 1
1 0
2 0
3 1
4 272
5 64453
6 23553340
7 13241130441
8 11008118941631
9 13027230343637042
10 21234181599255320655
11 46357847997267210103060
12 132373322228662190671151849
13 484443861947038578745971380703
14 2232754658868099948336222687731941
15 12763566506391999019612414249332466653

List of values

[1, 0, 0, 1, 272, 64453, 23553340, 13241130441, 11008118941631, 13027230343637042, 21234181599255320655, 46357847997267210103060, 132373322228662190671151849, 484443861947038578745971380703, 2232754658868099948336222687731941, 12763566506391999019612414249332466653]

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

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