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 A235415 Number of (n+1)X(3+1) 0..3 arrays with 2X2 subblock sums lexicographically nondecreasing rowwise and nonincreasing columnwise 1
 22500, 1826923, 149643266, 9676094946, 623604857055, 32662713888028, 1724073736174640, 76002795623829546, 3387480212316840735, 129022109042050899256, 4972470574066747942531, 166872014375969665991253 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 3 of A235416 LINKS R. H. Hardin, Table of n, a(n) for n = 1..28 EXAMPLE Some solutions for n=1 ..3..0..2..0....1..2..2..1....3..3..1..0....3..2..0..0....1..3..1..2 ..3..2..1..2....2..0..1..1....3..3..0..1....3..0..2..2....1..2..0..2 CROSSREFS Sequence in context: A250441 A204305 A251116 * A235260 A236085 A249614 Adjacent sequences:  A235412 A235413 A235414 * A235416 A235417 A235418 KEYWORD nonn AUTHOR R. H. Hardin, Jan 10 2014 STATUS approved

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Last modified January 25 19:09 EST 2020. Contains 331249 sequences. (Running on oeis4.)