A200986 Number of n X 4 0..4 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.
5, 79, 537, 1225, 1095, 15023, 95845, 268375, 325061, 168262, 1743684, 7499861, 15130265, 14517651, 5800482, 49981930, 178151444, 307672792, 257468817, 87287958, 681245186, 2178690191, 3396865595, 2581813804, 796596745
Offset: 1
Keywords
Examples
Some solutions for n=3 ..0..1..1..3....0..1..2..3....0..1..2..3....0..1..2..3....0..1..1..2 ..0..2..2..3....0..1..2..3....0..1..2..4....0..1..2..3....0..1..3..3 ..0..2..4..4....3..4..4..4....0..3..4..4....0..4..4..4....2..4..4..4
Links
- R. H. Hardin, Table of n, a(n) for n = 1..52
Crossrefs
Cf. A200990.
Comments