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.

A219886 Number of 5Xn arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 5Xn array.

Original entry on oeis.org

21, 87, 410, 2645, 14536, 74998, 371384, 1780796, 8327951, 37770000, 165587776, 701557921, 2877746302, 11458190975, 44395384830, 167697083241, 618401792448, 2228478398270, 7854147511367
Offset: 1

Views

Author

R. H. Hardin Nov 30 2012

Keywords

Comments

Row 5 of A219883

Examples

			Some solutions for n=3
..0..0..0....2..0..0....1..1..1....1..1..1....0..0..0....0..0..0....0..0..0
..0..0..0....2..0..0....1..1..1....1..1..1....0..0..0....0..0..0....0..0..0
..1..0..1....2..0..0....0..0..0....1..0..1....0..0..0....0..0..0....1..0..0
..1..2..1....2..0..1....0..0..0....1..0..0....0..0..0....0..1..0....1..0..1
..2..2..2....2..1..2....0..0..0....1..0..0....2..1..2....1..2..1....2..0..0