A291439 Array read by antidiagonals: T(m,n) = number of maximal irredundant sets in the grid graph P_m X P_n.
1, 2, 2, 2, 6, 2, 4, 9, 9, 4, 6, 18, 32, 18, 6, 8, 54, 103, 103, 54, 8, 13, 99, 383, 590, 383, 99, 13, 17, 216, 1280, 2807, 2807, 1280, 216, 17, 27, 512, 4247, 13138, 21555, 13138, 4247, 512, 27, 40, 1079, 14354, 67564, 150063, 150063, 67564, 14354, 1079, 40
Offset: 1
Examples
Array begins: ================================================= m\n| 1 2 3 4 5 6 7 ---|--------------------------------------------- 1 | 1 2 2 4 6 8 13... 2 | 2 6 9 18 54 99 216... 3 | 2 9 32 103 383 1280 4247... 4 | 4 18 103 590 2807 13138 67564... 5 | 6 54 383 2807 21555 150063 1122252... 6 | 8 99 1280 13138 150063 1598353 7 | 13 216 4247 67564 1122252 ...
Links
- Eric Weisstein's World of Mathematics, Grid Graph
- Eric Weisstein's World of Mathematics, Maximal Irredundant Set