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 A208864 T(n,k)=Number of nXk 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than one of its immediate leftward or upward or left-upward diagonal neighbors 8
 1, 2, 2, 5, 11, 5, 15, 127, 127, 15, 51, 1691, 5796, 1691, 51, 187, 23047, 273049, 273049, 23047, 187, 715, 315203, 12883280, 44452082, 12883280, 315203, 715, 2795, 4313071, 607924387, 7240366702, 7240366702, 607924387, 4313071, 2795, 11051, 59022155 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Table starts ....1........2.............5................15....................51 ....2.......11...........127..............1691.................23047 ....5......127..........5796............273049..............12883280 ...15.....1691........273049..........44452082............7240366702 ...51....23047......12883280........7240366702.........4071491223248 ..187...315203.....607924387.....1179377179523......2289701830963879 ..715..4313071...28686344276...192108983085145...1287681340443915644 .2795.59022155.1353633375649.31292693945057258.724166398812363542260 LINKS R. H. Hardin, Table of n, a(n) for n = 1..144 EXAMPLE Some solutions for n=4 k=3 ..0..0..1....0..0..0....0..1..1....0..1..0....0..0..0....0..0..0....0..0..0 ..0..2..0....0..1..2....1..0..2....0..2..3....0..1..2....0..1..1....0..1..1 ..1..2..1....1..2..3....3..0..1....3..0..0....2..1..2....0..1..2....1..2..0 ..3..0..0....1..0..0....1..1..2....2..1..3....0..1..2....2..3..2....1..0..1 CROSSREFS Column 1 is A007581(n-1) Sequence in context: A117400 A005637 A209100 * A104080 A078405 A109278 Adjacent sequences:  A208861 A208862 A208863 * A208865 A208866 A208867 KEYWORD nonn,tabl AUTHOR R. H. Hardin Mar 02 2012 STATUS approved

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