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!)
 A252920 Number of (3+2)X(n+2) 0..3 arrays with every consecutive three elements in every row having 2 or 3 distinct values, in every column 1 or 2 distinct values, in every diagonal 2 distinct values, and in every antidiagonal 2 distinct values, and new values 0 upwards introduced in row major order 1
 35674, 418853, 5247300, 67554413, 904486202, 12006682353, 160456041308, 2161866908346, 29002697628640, 389999512255547, 5251871898866981, 70639675506138194, 950670868788010336, 12799386451710340286 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 3 of A252917 LINKS R. H. Hardin, Table of n, a(n) for n = 1..41 EXAMPLE Some solutions for n=1 ..0..1..1....0..1..1....0..1..1....0..0..1....0..0..1....0..0..1....0..1..2 ..2..0..1....0..2..1....0..0..1....2..0..2....2..0..3....0..1..1....1..1..2 ..0..0..1....2..1..2....1..0..2....0..2..2....0..3..3....0..1..1....1..0..0 ..0..0..2....2..2..1....1..2..2....0..2..0....0..3..3....0..1..1....0..1..0 ..0..3..2....3..1..1....0..2..1....1..0..2....2..3..0....2..0..0....1..1..2 CROSSREFS Sequence in context: A163680 A172712 A161023 * A156405 A065611 A101252 Adjacent sequences:  A252917 A252918 A252919 * A252921 A252922 A252923 KEYWORD nonn AUTHOR R. H. Hardin, Dec 24 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 March 28 05:38 EDT 2020. Contains 333073 sequences. (Running on oeis4.)