The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A207488 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 1 and 1 1 0 vertically 11
 2, 4, 4, 6, 16, 6, 9, 36, 36, 9, 13, 81, 82, 81, 14, 18, 169, 217, 177, 196, 22, 25, 324, 499, 530, 408, 484, 35, 34, 625, 1014, 1322, 1459, 942, 1225, 56, 46, 1156, 2141, 2749, 4041, 3947, 2233, 3136, 90, 62, 2116, 4188, 6217, 8808, 12151, 11306, 5348, 8100, 145, 83 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ..2....4....6.....9.....13.....18.....25......34......46.......62.......83 ..4...16...36....81....169....324....625....1156....2116.....3844.....6889 ..6...36...82...217....499...1014...2141....4188....8150....15670....29517 ..9...81..177...530...1322...2749...6217...12712...25908....52474...103704 .14..196..408..1459...4041...8808..21991...48044..105558...230156...490287 .22..484..942..3947..12151..26980..73325..170276..397692...935992..2150515 .35.1225.2233.11306..39050..89417.268275..667760.1691526..4324858.10910668 .56.3136.5348.32445.126411.292136.959855.2555724.6929562.19404152.53733153 LINKS R. H. Hardin, Table of n, a(n) for n = 1..577 EXAMPLE Some solutions for n=4 k=3 ..1..1..1....0..1..0....0..0..1....1..0..1....0..1..0....0..0..1....0..1..0 ..1..1..1....0..0..1....0..0..1....1..0..1....1..1..0....0..1..0....0..0..1 ..1..1..1....1..1..0....1..0..1....1..0..1....0..1..0....0..0..1....1..0..0 ..1..1..1....0..0..1....0..0..1....1..0..1....1..1..1....0..1..0....0..0..1 CROSSREFS Column 1 is A001611(n+2) Column 2 is A207436 Row 1 is A171861(n+1) Row 2 is A207025 Row 3 is A207270 Sequence in context: A207514 A207879 A207682 * A207269 A207885 A207762 Adjacent sequences:  A207485 A207486 A207487 * A207489 A207490 A207491 KEYWORD nonn,tabl AUTHOR R. H. Hardin Feb 18 2012 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified November 28 16:42 EST 2021. Contains 349413 sequences. (Running on oeis4.)