A250672 Number of (n+1)X(4+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.
22119, 329226, 4008211, 41503790, 379890972, 3135539502, 23739860017, 167047195040, 1103768366168, 6905919873166, 41196085958108, 235655369716800, 1298966090014725, 6928230529332792, 35884432642746405, 181050004787559210
Offset: 1
Keywords
Examples
Some solutions for n=1 ..3..3..0..3..0....2..2..2..2..0....1..1..2..2..1....0..1..0..0..3 ..3..3..1..2..1....2..3..3..1..3....1..1..3..1..2....2..3..3..3..0
Links
- R. H. Hardin, Table of n, a(n) for n = 1..210
- R. H. Hardin, Empirical recurrence of order 47
Formula
Empirical recurrence of order 47 (see link above)
Comments