This site is supported by donations to The OEIS Foundation.

Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 4500 articles have referenced us, often saying "we would not have discovered this result without the OEIS".

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A206361 Number of (n+1)X2 0..3 arrays with every 2X3 or 3X2 subblock having no more than two equal edges, and new values 0..3 introduced in row major order 1
 15, 151, 1990, 27548, 383021, 5327971, 74147694, 1031960617, 14362233044, 199885520104, 2781900205987, 38716999664337, 538842441505438, 7499320389877491, 104371523732504906, 1452586950516895892 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 1 of A206366 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 16*a(n-1) -42*a(n-2) +234*a(n-3) -784*a(n-4) +714*a(n-5) -609*a(n-6) +1008*a(n-7) for n>8 EXAMPLE Some solutions for n=4 ..0..0....0..0....0..0....0..0....0..0....0..0....0..0....0..0....0..0....0..0 ..0..1....1..1....0..1....0..1....1..0....1..1....0..1....1..1....1..1....0..1 ..1..0....0..0....1..2....2..3....0..1....0..0....1..0....2..0....1..0....1..0 ..1..0....1..0....0..2....0..1....1..0....0..1....1..1....1..0....0..2....1..0 ..2..1....0..1....2..1....3..1....2..2....1..2....2..2....0..1....3..3....0..1 CROSSREFS Sequence in context: A021364 A206366 A016103 * A041424 A021124 A004322 Adjacent sequences:  A206358 A206359 A206360 * A206362 A206363 A206364 KEYWORD nonn AUTHOR R. H. Hardin Feb 06 2012 STATUS approved

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

Content is available under The OEIS End-User License Agreement .