A204960 Number of (n+1)X7 0..1 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing

3490, 147434, 5988660, 252709954, 11028008070, 470866502871, 19640644500055, 782197120564655, 29737199993040758, 1074526840455309433, 37006727830589345931, 1216701745652345574008, 38327778555441898854202

Offset

1,1

Comments

Column 6 of A204962

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Sequence in context: A268156 A180994 A204721 * A249525 A252049 A108117

Adjacent sequences: A204957 A204958 A204959 * A204961 A204962 A204963

Keyword

nonn

Author

R. H. Hardin Jan 20 2012

Status

approved