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A224684
Number of (n+4)X6 0..1 matrices with each 5X5 subblock idempotent
1
2351, 1312, 1494, 1720, 1938, 2110, 2591, 3332, 4377, 5599, 6968, 8749, 11314, 14818, 19530, 25558, 33366, 43649, 57438, 75842, 100289, 132470, 174892, 231022, 305587, 404481, 535530, 708936, 938459, 1242445, 1645315, 2179125, 2886344, 3823000
OFFSET
1,1
COMMENTS
Column 2 of A224690
LINKS
FORMULA
Empirical: a(n) = 2*a(n-1) -a(n-2) +a(n-3) -a(n-4) -a(n-7) +a(n-8) -a(n-9) +a(n-10) +a(n-12) -a(n-13) for n>18
EXAMPLE
Some solutions for n=2
..1..0..0..0..0..0....1..0..0..0..0..0....0..0..0..0..0..0....1..0..0..0..0..1
..1..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0....1..0..0..0..0..0
..0..0..0..0..0..0....0..1..0..0..1..0....0..0..0..0..0..0....1..0..0..0..0..1
..0..0..1..0..1..0....0..1..0..0..1..0....0..0..0..0..0..0....0..0..0..0..0..1
..0..0..1..0..1..0....0..1..0..0..1..0....0..0..0..1..1..1....0..0..0..0..0..1
..0..0..0..0..0..1....0..0..0..0..0..0....0..0..0..0..0..0....1..0..0..0..0..1
CROSSREFS
Sequence in context: A045306 A351229 A264943 * A198047 A179137 A003552
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 15 2013
STATUS
approved