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 A222862 Table read by antidiagonals: T(n,k) is the number of n X k 0..1 arrays with every row and column least squares fitting to a nonnegative-slope straight line, with a single point array taken as having zero slope. 9
 2, 3, 3, 6, 6, 6, 10, 18, 18, 10, 20, 41, 108, 41, 20, 36, 123, 410, 410, 123, 36, 74, 310, 2460, 2262, 2460, 310, 74, 137, 957, 11160, 22620, 22620, 11160, 957, 137, 282, 2530, 70818, 156436, 452400, 156436, 70818, 2530, 282, 536, 7848, 346610, 1672630 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts 2, 3, 6, 10, 20, 36, ... 3, 6, 18, 41, 123, 310, ... 6, 18, 108, 410, 2460, 11160, ... 10, 41, 410, 2262, 22620, 156436, ... 20, 123, 2460, 22620, 452400, 5631696, ... 36, 310, 11160, 156436, 5631696, 113936464, ... 74, 957, 70818, 1672630, 123774620, 4591340316, ... 137, 2530, 346610, 12777951, 1750579287, 108296570876, ... 282, 7848, 2213136, 137893630, 38886003660, 4422968648712, ... 536, 21618, 11587248, 1149894920, 616343677120, 119741989131520, ... 1100, 67131, 73844100, 12404839040, 13645322944000, ... 2117, 188835, 399763695, 108106327001, ... LINKS R. H. Hardin, Table of n, a(n) for n = 1..127 EXAMPLE Some solutions for n=3, k=4: 0 0 0 0 0 0 0 1 0 1 1 1 0 0 0 0 0 0 1 0 0 0 1 0 0 1 1 1 0 1 1 1 0 1 0 1 0 1 0 1 0 1 1 1 0 0 0 1 0 1 1 1 0 1 1 1 0 0 1 1 CROSSREFS Sequence in context: A212629 A127779 A207634 * A101437 A039856 A301703 Adjacent sequences: A222859 A222860 A222861 * A222863 A222864 A222865 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Mar 07 2013 STATUS approved

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Last modified February 22 20:12 EST 2024. Contains 370261 sequences. (Running on oeis4.)