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 A209716 T(n,k)=1/4 the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having distinct clockwise edge differences 9
 24, 175, 175, 1241, 2710, 1241, 8876, 40600, 40600, 8876, 63280, 614935, 1277340, 614935, 63280, 451762, 9278940, 40731729, 40731729, 9278940, 451762, 3223192, 140274002, 1293734407, 2744311427, 1293734407, 140274002, 3223192, 23003132 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .......24.........175...........1241..............8876................63280 ......175........2710..........40600............614935..............9278940 .....1241.......40600........1277340..........40731729...........1293734407 .....8876......614935.......40731729........2744311427.........183988612894 ....63280.....9278940.....1293734407......183988612894.......26024000948100 ...451762...140274002....41170011836....12365282426546.....3690894707522275 ..3223192..2118517533..1308905451923...830023337140244...522757733883587522 .23003132.32012611741.41634764453267.55752055566749390.74095286689410395475 LINKS R. H. Hardin, Table of n, a(n) for n = 1..144 EXAMPLE Some solutions for n=4 k=3 ..1..0..3..2....0..0..1..0....0..1..0..3....3..2..2..0....1..0..0..0 ..3..2..3..0....1..3..3..3....2..3..1..0....1..3..0..3....0..3..1..3 ..0..2..0..1....0..0..1..0....0..3..0..3....0..1..3..1....1..0..1..0 ..2..3..1..3....2..3..1..3....0..1..0..1....1..3..0..3....1..3..3..1 ..2..0..3..2....0..3..0..3....3..3..3..1....1..0..1..1....1..0..1..2 CROSSREFS Sequence in context: A272125 A166756 A268623 * A209709 A209986 A297522 Adjacent sequences: A209713 A209714 A209715 * A209717 A209718 A209719 KEYWORD nonn,tabl AUTHOR R. H. Hardin Mar 11 2012 STATUS approved

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Last modified December 1 04:36 EST 2022. Contains 358454 sequences. (Running on oeis4.)