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!)
 A238319 Number of (n+1) X (4+1) 0..2 arrays with no element greater than all horizontal neighbors or less than all vertical neighbors. 1
 51, 1867, 41046, 721939, 13265123, 261676376, 5206684654, 102053610873, 1987295524193, 38770223731701, 758012281434166, 14822685184195262, 289709710098420174, 5661329642092072222, 110637907561833470425 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 4 of A238323. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 EXAMPLE Some solutions for n=3 ..1..2..2..2..2....2..2..2..1..1....1..2..2..2..1....1..1..1..0..0 ..0..0..0..0..0....0..2..2..1..0....0..1..1..1..1....1..1..0..0..0 ..0..0..0..0..0....0..0..1..1..0....0..1..1..1..1....1..1..0..0..0 ..0..0..0..2..2....0..0..1..1..0....0..2..2..2..1....1..2..2..1..0 CROSSREFS Cf. A238323. Sequence in context: A017767 A017714 A202044 * A014943 A278623 A288604 Adjacent sequences:  A238316 A238317 A238318 * A238320 A238321 A238322 KEYWORD nonn AUTHOR R. H. Hardin, Feb 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 November 29 18:41 EST 2021. Contains 349416 sequences. (Running on oeis4.)