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A275501
Number of nX5 0..2 arrays with no element equal to any value at offset (-2,-1) (-2,0) or (-1,-1) and new values introduced in order 0..2.
1
41, 1944, 2000, 3168, 4180, 13384, 43780, 143784, 470352, 1549756, 5114352, 16851668, 55718276, 183999596, 607959912, 2009783684, 6640967048, 21951863104, 72556631720, 239811612380, 792682822452, 2620034132264, 8660100023060
OFFSET
1,1
COMMENTS
Column 5 of A275504.
LINKS
FORMULA
Empirical: a(n) = a(n-1) +16*a(n-2) -120*a(n-4) -55*a(n-5) +549*a(n-6) +319*a(n-7) -1772*a(n-8) -891*a(n-9) +4300*a(n-10) +1407*a(n-11) -7992*a(n-12) -1155*a(n-13) +11470*a(n-14) +a(n-15) -12854*a(n-16) +1155*a(n-17) +11372*a(n-18) -1407*a(n-19) -7960*a(n-20) +891*a(n-21) +4357*a(n-22) -320*a(n-23) -1820*a(n-24) +55*a(n-25) +560*a(n-26) -120*a(n-28) -a(n-29) +16*a(n-30) -a(n-32) for n>36
EXAMPLE
Some solutions for n=4
..0..1..2..1..1. .0..0..0..0..1. .0..0..0..0..0. .0..0..0..1..0
..1..2..2..0..0. .2..1..1..1..2. .1..1..1..1..1. .0..1..1..1..2
..1..2..0..0..2. .1..1..2..2..2. .2..2..2..2..2. .1..2..2..2..2
..0..0..0..1..1. .1..0..0..0..0. .0..0..0..0..0. .1..2..0..0..0
CROSSREFS
Cf. A275504.
Sequence in context: A233070 A267267 A049676 * A275398 A275263 A080178
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 30 2016
STATUS
approved