A267971 Number of nX3 0..3 arrays with every repeated value in every row greater than or equal to, and in every column greater than, the previous repeated value.

64, 4096, 216000, 10941048, 519718464, 23689358848, 1040125019968, 44297983526887, 1837365396992000, 74486671360299008, 2959536976199968256, 115510695146966939968, 4436989542752316253696, 167999383203780355895296

Offset

1,1

Comments

Column 3 of A267974.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical recurrence of order 40

Formula

Empirical recurrence of order 40 (see link above)

Example

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

Crossrefs

Cf. A267974.

Sequence in context: A283862 A223567 A223580 * A229102 A222934 A267994

Adjacent sequences: A267968 A267969 A267970 * A267972 A267973 A267974

Keyword

nonn

Author

R. H. Hardin, Jan 23 2016

Status

approved