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 A255037 Number of (2+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the central row and central column minus the two minimums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1
 2554, 9492, 39935, 149676, 470542, 1327776, 3504157, 8592073, 19523668, 42192840, 87741169, 175828172, 340618536, 642923427, 1187248357, 2146944186, 3811714957, 6667796028, 11509404139, 19616095273, 33069965639, 55247271475, 91517734117 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 2 of A255036 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 6*a(n-1) -13*a(n-2) +14*a(n-3) -13*a(n-4) +a(n-5) +42*a(n-6) -58*a(n-7) +36*a(n-8) -46*a(n-9) -11*a(n-10) +110*a(n-11) -129*a(n-12) +178*a(n-13) -64*a(n-14) -139*a(n-15) +99*a(n-16) -198*a(n-17) +230*a(n-18) -37*a(n-19) +105*a(n-20) -130*a(n-21) +155*a(n-22) -101*a(n-23) -134*a(n-24) +232*a(n-25) -533*a(n-26) +202*a(n-27) +452*a(n-28) +96*a(n-29) -732*a(n-30) +309*a(n-31) +761*a(n-32) -681*a(n-33) -702*a(n-34) +688*a(n-35) +552*a(n-36) -938*a(n-37) -12*a(n-38) +892*a(n-39) -172*a(n-40) -652*a(n-41) +252*a(n-42) +324*a(n-43) -296*a(n-44) -112*a(n-45) +192*a(n-46) +56*a(n-47) -80*a(n-48) -16*a(n-49) +16*a(n-50) for n>63 EXAMPLE Some solutions for n=4 ..0..0..1..1..1..0....0..0..1..1..0..0....1..1..0..0..0..1....1..0..0..0..0..0 ..1..0..0..0..1..1....0..0..0..0..1..1....0..0..0..0..1..0....0..0..0..0..0..0 ..1..1..1..1..1..1....1..0..1..1..1..1....0..0..1..0..1..0....0..0..0..0..1..1 ..1..0..0..0..1..0....1..1..1..1..1..0....0..0..0..1..0..0....1..0..1..1..1..1 CROSSREFS Cf. A255036 Sequence in context: A235085 A252685 A255030 * A256948 A202587 A125492 Adjacent sequences:  A255034 A255035 A255036 * A255038 A255039 A255040 KEYWORD nonn AUTHOR R. H. Hardin, Feb 13 2015 STATUS approved

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Last modified November 30 22:31 EST 2021. Contains 349426 sequences. (Running on oeis4.)