The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A205607 Number of (n+1)X7 0..3 arrays with every 2X2 subblock having the same number of equal edges as its horizontal neighbors and a different number from its vertical neighbors, and new values 0..3 introduced in row major order 1
 108173, 9502090, 979571551, 97605128794, 10366271787461, 1046956456530150, 109899225787392773, 11211535684842527722, 1169685856854744262666, 119879347132519641324542, 12459568360483143825667514 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 6 of A205609 LINKS R. H. Hardin, Table of n, a(n) for n = 1..17 EXAMPLE Some solutions for n=4 ..0..1..1..2..2..1..0....0..0..0..1..0..0..2....0..0..0..0..1..2..0 ..2..2..3..3..0..1..2....0..3..0..0..0..2..2....0..2..0..1..1..2..2 ..3..2..2..3..0..1..2....0..2..2..1..3..3..1....1..1..0..3..0..0..3 ..3..0..1..3..2..1..3....2..2..1..1..3..1..1....0..1..0..0..0..3..3 ..3..0..1..3..2..1..1....3..0..0..2..2..2..0....2..1..3..1..2..2..0 CROSSREFS Sequence in context: A203882 A178284 A157825 * A205438 A102333 A236650 Adjacent sequences:  A205604 A205605 A205606 * A205608 A205609 A205610 KEYWORD nonn AUTHOR R. H. Hardin Jan 29 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 December 9 05:30 EST 2021. Contains 349627 sequences. (Running on oeis4.)