A185607 Number of (n+1)X4 0..3 arrays with every 2X2 subblock determinant equal to some horizontal or vertical neighbor 2X2 subblock determinant

2366, 172026, 4473352, 173403770, 5539941616, 195867482580, 6595709318618, 227666412255534, 7763071689162734, 266351559937007588, 9110713339567481710, 312120282081615187852, 10684624737086835808560, 365902084298071259519514

Offset

1,1

Comments

Column 3 of A185609

Links

R. H. Hardin, Table of n, a(n) for n = 1..53

Example

Some solutions for 3X4
..1..1..0..3....1..2..2..2....3..3..0..2....2..1..2..1....0..2..3..0
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..2..2....0..0..0..0
..3..1..2..0....3..2..1..0....3..2..0..0....0..0..3..3....2..2..0..3

Crossrefs

Sequence in context: A187238 A247923 A186785 * A068282 A234328 A258520

Adjacent sequences: A185604 A185605 A185606 * A185608 A185609 A185610

Keyword

nonn

Author

R. H. Hardin Jan 31 2011

Status

approved