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.

A251800 Number of (n+1)X(7+1) 0..3 arrays with no 2X2 subblock having x11-x00 less than x10-x01.

Table of values

n a(n)
1 4206453
2 1271711747
3 413630526506
4 145329837643171
5 52256028323545001
6 19010586449609604592
7 6950854990205965398511
8 2548249927405969316226847
9 935397563567598908162444188
10 343605100623054019565873475859

List of values

[4206453, 1271711747, 413630526506, 145329837643171, 52256028323545001, 19010586449609604592, 6950854990205965398511, 2548249927405969316226847, 935397563567598908162444188, 343605100623054019565873475859]

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

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