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 A224017 Number of 7Xn 0..2 arrays with rows nondecreasing and antidiagonals unimodal 1
 2187, 279936, 4549684, 32148473, 157347899, 630339756, 2200064042, 6905100668, 19884396658, 53273320570, 134149069532, 319991143494, 727540081476, 1584708043525, 3320910477511, 6719637130491, 13169292526095, 25065634112639 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 7 of A224012 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = (118519/21794572800)*n^14 + (93527/444787200)*n^13 + (611041/119750400)*n^12 + (20516659/239500800)*n^11 + (983303/907200)*n^10 + (76863193/7257600)*n^9 + (6226908251/76204800)*n^8 + (10267137467/21772800)*n^7 + (44655148529/21772800)*n^6 + (59149317869/10886400)*n^5 + (6745497467/1108800)*n^4 - (150827667029/9979200)*n^3 - (38880748217/10090080)*n^2 + (55017835997/360360)*n + 124353 for n>5 EXAMPLE Some solutions for n=3 ..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0 ..0..0..1....0..0..0....0..0..0....0..0..1....0..0..0....0..0..1....0..0..1 ..1..1..2....0..1..2....0..2..2....1..1..2....0..1..2....0..1..2....0..1..2 ..0..1..1....1..1..1....1..1..1....0..0..0....2..2..2....0..1..2....2..2..2 ..1..1..1....0..2..2....1..1..2....0..1..2....0..1..1....1..1..1....1..1..2 ..1..2..2....0..1..1....1..1..1....1..1..1....0..2..2....0..0..1....0..2..2 ..0..0..2....0..2..2....1..1..1....0..2..2....0..0..1....0..0..0....0..2..2 CROSSREFS Sequence in context: A232029 A268977 A224358 * A016771 A059979 A224315 Adjacent sequences:  A224014 A224015 A224016 * A224018 A224019 A224020 KEYWORD nonn AUTHOR R. H. Hardin Mar 30 2013 STATUS approved

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Last modified May 20 06:37 EDT 2022. Contains 353852 sequences. (Running on oeis4.)