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 A235408 Number of (n+1)X(3+1) 0..1 arrays with 2X2 subblock sums lexicographically nondecreasing rowwise and nonincreasing columnwise 1
 121, 704, 4256, 20398, 98575, 397340, 1623115, 5744912, 20612708, 65877470, 213190201, 627225413, 1867007833, 5131067959, 14261504547, 37041121138, 97280493869, 241057367009, 603912355679, 1438964930953, 3465601783227 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 3 of A235413 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 R. H. Hardin, Empirical recurrence of order 73 FORMULA Empirical recurrence of order 73 (see link above) EXAMPLE Some solutions for n=4 ..1..0..0..0....0..1..0..1....0..1..0..1....1..0..0..1....1..0..0..0 ..0..1..0..0....1..0..1..0....1..1..0..1....1..1..1..0....0..0..0..0 ..1..0..1..0....1..1..0..1....0..1..1..0....1..0..1..1....0..1..0..1 ..0..1..0..0....1..0..1..0....1..1..0..1....1..1..1..0....1..0..1..0 ..1..1..1..0....1..1..1..0....1..1..1..1....0..1..1..0....0..1..0..1 CROSSREFS Sequence in context: A048950 A020229 A141350 * A190877 A293566 A293507 Adjacent sequences:  A235405 A235406 A235407 * A235409 A235410 A235411 KEYWORD nonn AUTHOR R. H. Hardin, Jan 10 2014 STATUS approved

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Last modified August 18 04:50 EDT 2019. Contains 326072 sequences. (Running on oeis4.)