This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A204623 Number of (n+1)X2 0..2 arrays with every 2X2 subblock having unequal diagonal elements or unequal antidiagonal elements, and new values 0..2 introduced in row major order 3
 12, 96, 768, 6144, 49152, 393216, 3145728, 25165824, 201326592, 1610612736, 12884901888, 103079215104, 824633720832, 6597069766656, 52776558133248, 422212465065984, 3377699720527872, 27021597764222976, 216172782113783808 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 1 of A204630 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 8*a(n-1) EXAMPLE Some solutions for n=3 ..0..0....0..0....0..0....0..0....0..1....0..0....0..0....0..0....0..0....0..1 ..0..1....1..2....0..1....0..1....2..1....1..1....0..1....0..1....0..1....1..1 ..2..2....0..2....0..1....1..2....2..0....2..0....1..1....0..0....2..1....1..2 ..0..2....2..1....0..1....2..2....0..1....0..1....1..2....2..1....0..2....1..2 CROSSREFS Cf. A094085, A270568. Sequence in context: A264418 A073392 A038845 * A270568 A223151 A155620 Adjacent sequences:  A204620 A204621 A204622 * A204624 A204625 A204626 KEYWORD nonn AUTHOR R. H. Hardin Jan 17 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 October 21 11:25 EDT 2019. Contains 328295 sequences. (Running on oeis4.)