The On-Line Encyclopedia of Integer Sequences (OEIS)

A235778 revision #2

A235778

Number of (n+1)X(3+1) 0..3 arrays with the sum of each 2X2 subblock two extreme terms minus its two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise

23024, 1581879, 101237218, 5639406769, 284827103857, 12969746978427, 542604984360890, 20967636062967018, 756914723702877353, 25670260853234070465, 824040021622030909676, 25151768078055048000358

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OFFSET

1,1

COMMENTS

Column 3 of A235779

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

Some solutions for n=1

..3..0..1..3....3..2..2..2....2..2..0..2....3..3..2..2....2..3..0..0

..0..3..2..0....0..1..3..3....1..2..1..1....1..1..0..0....3..1..3..0

CROSSREFS