This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A252844 T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every consecutive three elements in every row and diagonal having one or two distinct values, and in every column and antidiagonal having two or three distinct values, and new values 0 upwards introduced in row major order 7
 1305, 15395, 24951, 175204, 510488, 488880, 2045858, 10339272, 17431462, 9644050, 23788014, 211956317, 610768407, 598576435, 190273279, 277324636, 4399478503, 21483285845, 36248318755, 20541757032, 3754660940, 3231587589, 91508212229 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ..........1305..........15395..........175204.........2045858........23788014 .........24951.........510488........10339272.......211956317......4399478503 ........488880.......17431462.......610768407.....21483285845....777477410236 .......9644050......598576435.....36248318755...2207250617866.140063220191585 .....190273279....20541757032...2154288643145.227032633146768 ....3754660940...705111416679.127991617429929 ...74090662687.24203999575311 .1462043624070 LINKS R. H. Hardin, Table of n, a(n) for n = 1..39 FORMULA Empirical for column k: k=1: [linear recurrence of order 52] for n>53 Empirical for row n: n=1: [linear recurrence of order 96] for n>99 EXAMPLE Some solutions for n=1 k=4 ..0..0..1..1..2..1....0..0..1..1..2..2....0..0..0..0..1..0....0..0..1..1..1..2 ..0..0..3..3..2..3....2..0..0..3..3..1....2..0..0..1..0..1....1..0..1..1..0..0 ..1..1..0..0..1..1....0..2..2..1..1..3....1..2..2..1..1..2....3..3..0..0..0..0 CROSSREFS Sequence in context: A014356 A252308 A277772 * A252845 A252841 A255025 Adjacent sequences:  A252841 A252842 A252843 * A252845 A252846 A252847 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Dec 22 2014 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 September 21 00:17 EDT 2019. Contains 327252 sequences. (Running on oeis4.)