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 A223831 T(n,k)=Number of nXk 0..2 arrays with rows and columns unimodal 7
 3, 9, 9, 22, 81, 22, 46, 484, 484, 46, 86, 2116, 6166, 2116, 86, 148, 7396, 51136, 51136, 7396, 148, 239, 21904, 310396, 738482, 310396, 21904, 239, 367, 57121, 1492552, 7291180, 7291180, 1492552, 57121, 367, 541, 134689, 5995781, 54035194, 111026387 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ...3......9........22..........46............86.............148 ...9.....81.......484........2116..........7396...........21904 ..22....484......6166.......51136........310396.........1492552 ..46...2116.....51136......738482.......7291180........54035194 ..86...7396....310396.....7291180.....111026387......1215505987 .148..21904...1492552....54035194....1215505987.....18986502099 .239..57121...5995781...320423509...10278415020....222531132820 .367.134689..20879061..1590193515...70637615542...2068398813560 .541.292681..64727664..6823643014..409495177832..15880238812350 .771.594441.182215264.25942390362.2059270878998.103853282918692 LINKS R. H. Hardin, Table of n, a(n) for n = 1..144 FORMULA Empirical: columns k=1..7 are polynomials of degree 4*k EXAMPLE Some solutions for n=3 k=4 ..1..2..0..0....0..0..1..1....0..2..2..0....1..2..1..0....0..1..1..1 ..2..2..0..0....1..2..1..1....0..2..2..2....0..2..1..1....1..1..2..2 ..0..2..1..0....0..0..1..1....0..0..2..2....0..1..2..2....0..1..2..1 CROSSREFS Column 1 is A223718 Column 2 is A223719 Sequence in context: A238323 A223742 A223725 * A223885 A223892 A223789 Adjacent sequences: A223828 A223829 A223830 * A223832 A223833 A223834 KEYWORD nonn,tabl AUTHOR R. H. Hardin Mar 27 2013 STATUS approved

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Last modified March 2 20:47 EST 2024. Contains 370498 sequences. (Running on oeis4.)