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 A222616 T(n,k)=Number of nXk 0..3 arrays with no more than floor(nXk/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..3 order 7
 1, 1, 1, 1, 1, 1, 4, 3, 3, 4, 5, 12, 5, 12, 5, 14, 40, 65, 65, 40, 14, 17, 149, 181, 567, 181, 149, 17, 75, 615, 3545, 5746, 5746, 3545, 615, 75, 95, 2659, 11421, 85511, 60550, 85511, 11421, 2659, 95, 411, 11641, 243955, 1409334, 2921905, 2921905, 1409334 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,7 COMMENTS Table starts ....1.......1..........1.............4..............5...............14 ....1.......1..........3............12.............40..............149 ....1.......3..........5............65............181.............3545 ....4......12.........65...........567...........5746............85511 ....5......40........181..........5746..........60550..........2921905 ...14.....149.......3545.........85511........2921905........118162369 ...17.....615......11421.......1409334.......43650470.......5996281816 ...75....2659.....243955......23117220.....2748085305.....346754406852 ...95...11641.....829319.....385330520....44499006072...21456580709691 ..411...51672...17592855....6476514601..2935039880037.1373306350646075 ..519..231598...61952605..108758391488.48422176002273 .2522.1044550.1284213397.1826675971872 LINKS R. H. Hardin, Table of n, a(n) for n = 1..127 EXAMPLE Some solutions for n=3 k=4 ..0..0..0..1....0..0..0..0....0..0..0..0....0..1..1..1....0..0..0..0 ..0..0..1..1....0..0..0..1....0..0..0..0....1..1..1..1....0..0..0..1 ..0..0..1..1....0..0..0..0....0..0..0..0....1..1..1..0....0..0..2..1 CROSSREFS Column 1 is A222372 Sequence in context: A270651 A222635 A222649 * A011762 A195780 A063571 Adjacent sequences:  A222613 A222614 A222615 * A222617 A222618 A222619 KEYWORD nonn,tabl AUTHOR R. H. Hardin Feb 26 2013 STATUS approved

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Last modified December 9 13:50 EST 2019. Contains 329877 sequences. (Running on oeis4.)