login

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 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A204787
Number of (n+1)X5 0..7 arrays with the permanents of all 2X2 subblocks equal and nonzero
1
180069, 14627079, 78694139, 7174463023, 41778004243, 3696936217731, 23045110901481, 1923275017969469, 12794115288800719, 1003141649419958669, 7094266375072788335, 523788639006327053727, 3923252186837156318227
OFFSET
1,1
COMMENTS
Column 4 of A204791
LINKS
EXAMPLE
Some solutions for n=4
..1..3..4..4..5....0..6..2..0..2....6..2..1..0..1....6..2..6..6..5
..5..1..4..0..4....1..3..0..3..3....1..0..1..2..7....3..2..3..0..3
..1..3..4..4..0....0..6..2..0..2....7..2..1..0..1....6..2..6..6..0
..5..1..4..0..4....1..3..0..3..5....1..0..1..2..6....0..3..0..3..3
..1..3..4..4..4....0..6..2..0..2....2..2..1..0..1....6..0..6..0..6
CROSSREFS
Sequence in context: A186062 A258562 A362807 * A060232 A190380 A235716
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 19 2012
STATUS
approved