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 A260841 T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00010101 9
 48, 82, 82, 188, 131, 188, 364, 288, 288, 364, 644, 496, 700, 496, 644, 1320, 796, 1224, 1224, 796, 1320, 2584, 1645, 1560, 2235, 1560, 1645, 2584, 4842, 2976, 3470, 2590, 2590, 3470, 2976, 4842, 9412, 4890, 6908, 6232, 3828, 6232, 6908, 4890, 9412, 18210 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ....48....82...188...364....644...1320...2584...4842....9412...18210...35192 ....82...131...288...496....796...1645...2976...4890....9332...17659...30090 ...188...288...700..1224...1560...3470...6908..10070...18716...39478...64940 ...364...496..1224..2235...2590...6232..13170..17731...34192...77780..123488 ...644...796..1560..2590...3828...8646..16000..24508...49816..103124..168848 ..1320..1645..3470..6232...8646..19718..37882..58489..116930..248515..412314 ..2584..2976..6908.13170..16000..37882..80516.119194..231008..526102..890868 ..4842..4890.10070.17731..24508..58489.119194.181176..369672..835045.1415774 ..9412..9332.18716.34192..49816.116930.231008.369672..766388.1697970.2896836 .18210.17659.39478.77780.103124.248515.526102.835045.1697970.3885356.6805170 LINKS R. H. Hardin, Table of n, a(n) for n = 1..612 FORMULA Empirical for column k: k=1: [linear recurrence of order 14] for n>15 k=2: [order 18] for n>19 k=3: [order 22] for n>24 k=4: [order 33] for n>34 k=5: [order 59] for n>63 k=6: [order 92] for n>96 EXAMPLE Some solutions for n=4 k=4 ..1..1..0..0..0..0....1..0..0..0..0..0....0..0..0..0..0..0....0..0..1..1..0..1 ..0..0..0..0..0..0....0..1..0..0..1..1....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..0..1..0..0..1....0..0..0..0..0..1 ..1..1..0..0..1..0....0..0..0..0..0..0....0..0..1..0..0..1....0..1..1..0..0..0 ..0..0..0..0..0..0....0..1..0..0..1..0....0..0..0..0..0..0....0..0..0..0..0..0 ..0..0..0..0..0..0....1..1..0..0..1..0....0..0..0..0..0..0....0..0..0..0..0..1 CROSSREFS Sequence in context: A178739 A261548 A065911 * A260767 A211722 A260834 Adjacent sequences:  A260838 A260839 A260840 * A260842 A260843 A260844 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Aug 01 2015 STATUS approved

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Last modified December 3 05:05 EST 2021. Contains 349445 sequences. (Running on oeis4.)