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 A202795 T(n,k)=Number of nXk binary arrays with every one adjacent to another one horizontally, diagonally, antidiagonally or vertically 8
 1, 2, 2, 4, 12, 4, 7, 50, 50, 7, 12, 188, 398, 188, 12, 21, 724, 3018, 3018, 724, 21, 37, 2820, 23436, 45519, 23436, 2820, 37, 65, 10960, 182430, 702846, 702846, 182430, 10960, 65, 114, 42544, 1417772, 10892633, 21649928, 10892633, 1417772, 42544, 114 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Table starts ...1......2.........4............7..............12.................21 ...2.....12........50..........188.............724...............2820 ...4.....50.......398.........3018...........23436.............182430 ...7....188......3018........45519..........702846...........10892633 ..12....724.....23436.......702846........21649928..........669872090 ..21...2820....182430.....10892633.......669872090........41382940317 ..37..10960...1417772....168585867.....20696263392......2552520578945 ..65..42544..11017196...2608652667....639259508770....157398925950921 .114.165176..85621362..40368680378..19746821708510...9706685199080140 .200.641376.665418194.624709738658.609991818060458.598614098605286252 LINKS R. H. Hardin, Table of n, a(n) for n = 1..480 EXAMPLE Some solutions for n=5 k=3 ..0..1..1....0..1..0....0..1..0....1..0..1....1..0..1....0..1..0....0..1..1 ..0..0..0....1..1..1....1..0..1....1..1..0....1..0..1....1..0..0....0..1..1 ..0..1..1....0..1..1....1..1..0....0..0..0....0..1..0....0..1..0....0..1..1 ..0..1..1....1..0..1....0..1..0....1..0..0....0..1..1....1..1..1....1..0..0 ..0..1..1....1..1..0....1..0..1....1..1..0....1..0..0....1..0..1....1..0..0 CROSSREFS Column 1 is A005251(n+2) Sequence in context: A115011 A296688 A219569 * A256890 A110476 A330762 Adjacent sequences: A202792 A202793 A202794 * A202796 A202797 A202798 KEYWORD nonn,tabl AUTHOR R. H. Hardin Dec 24 2011 STATUS approved

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Last modified March 24 14:51 EDT 2023. Contains 361479 sequences. (Running on oeis4.)