A206167 Number of (n+1)X7 0..3 arrays with every 2X2 subblock in a row having an equal number of equal diagonal or equal antidiagonal elements, adjacent rows differing in this number, and new values 0..3 introduced in row major order

385465, 38016046, 13703317686, 1361622567126, 490998144726398, 48801583349072774, 17594902146494956438, 1749161667350452565814, 630514365621711332095246, 62694035569411089869428342

Offset

1,1

Comments

Column 6 of A206169

Links

R. H. Hardin, Table of n, a(n) for n = 1..25

Example

Some solutions for n=4
..0..0..0..0..0..0..1....0..0..0..0..0..0..0....0..0..1..0..0..2..0
..2..1..1..1..3..2..3....1..0..2..0..1..0..2....0..1..1..1..0..0..3
..1..1..3..1..1..3..0....1..3..1..0..1..3..2....3..2..0..3..2..1..1
..2..2..2..0..0..3..1....2..1..2..1..1..1..3....2..0..3..1..3..2..1
..1..2..3..2..0..0..3....2..0..0..3..0..0..2....3..1..2..0..0..0..1

Crossrefs

Sequence in context: A205759 A205589 A157843 * A206381 A234216 A258686

Adjacent sequences: A206164 A206165 A206166 * A206168 A206169 A206170

Keyword

nonn

Author

R. H. Hardin Feb 04 2012

Status

approved