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A224591
Number of (n+7)X9 0..1 matrices with each 8X8 subblock idempotent
1
1770078, 147268, 100703, 101365, 107496, 110868, 115146, 114018, 114766, 133978, 169910, 214886, 272088, 334806, 399468, 466019, 536615, 623079, 745408, 912260, 1138206, 1426319, 1776503, 2191326, 2681245, 3258156, 3953601, 4814939, 5903764
OFFSET
1,1
COMMENTS
Column 2 of A224597
LINKS
FORMULA
Empirical: a(n) = 2*a(n-1) -2*a(n-2) +a(n-3) -a(n-4) +2*a(n-5) -3*a(n-6) +4*a(n-7) -3*a(n-8) +3*a(n-9) -2*a(n-10) +3*a(n-11) -2*a(n-12) +3*a(n-13) -2*a(n-14) +a(n-15) -a(n-17) -2*a(n-19) +a(n-20) -4*a(n-21) +2*a(n-22) -4*a(n-23) +3*a(n-24) -5*a(n-25) +4*a(n-26) -3*a(n-27) +3*a(n-28) -2*a(n-29) +4*a(n-30) -2*a(n-31) +3*a(n-32) +a(n-34) +a(n-35) +a(n-39) -2*a(n-40) +a(n-41) -a(n-42) -a(n-44) +a(n-45) -a(n-46) for n>59
EXAMPLE
Some solutions for n=3
..1..1..1..0..0..1..0..0..1....1..1..1..0..0..0..0..0..1
..0..0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0..0
..0..0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0..0
..0..0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0..0
..0..0..0..0..0..0..0..0..0....0..0..0..1..0..0..1..0..0
..0..0..0..0..0..0..0..0..0....0..0..0..1..0..0..1..0..0
..0..0..0..0..0..0..0..0..0....0..0..0..1..0..0..1..0..0
..0..0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0..0
..0..1..0..1..0..1..1..1..1....0..0..0..0..0..0..0..0..0
..0..0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..1..1
CROSSREFS
Sequence in context: A251981 A237148 A203941 * A017286 A017394 A017658
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 11 2013
STATUS
approved