A217980 Number of nX6 arrays of the minimum value of corresponding elements and their horizontal, vertical, diagonal or antidiagonal neighbors in a random 0..1 nX6 array.

16, 16, 256, 1180, 8872, 54504, 363728, 2347480, 15361400, 99957900, 651962620, 4248252712, 27693131900, 180493901576, 1176474695224, 7668147995040, 49980828130368, 325772423519628, 2123371872316720, 13840043094715540

Offset

1,1

Comments

Column 6 of A217982

Links

R. H. Hardin, Table of n, a(n) for n = 1..101

Formula

Empirical: a(n) = 5*a(n-1) +20*a(n-2) -26*a(n-3) -243*a(n-4) -402*a(n-5) +1359*a(n-6) +3862*a(n-7) +575*a(n-8) -14159*a(n-9) -23730*a(n-10) +21635*a(n-11) +49428*a(n-12) +39959*a(n-13) -70045*a(n-14) -163116*a(n-15) +162408*a(n-16) +246212*a(n-17) -242465*a(n-18) -333744*a(n-19) +159949*a(n-20) +337852*a(n-21) -38088*a(n-22) -156828*a(n-23) -5419*a(n-24) +49017*a(n-25) +4621*a(n-26) -24626*a(n-27) -9053*a(n-28) +3845*a(n-29) +4770*a(n-30) +619*a(n-31) -302*a(n-32) -153*a(n-33) -20*a(n-34) +12*a(n-35)

Example

Some solutions for n=3
..1..1..0..0..0..1....0..0..0..0..0..1....1..1..0..0..0..1....1..1..0..0..0..0
..0..0..0..0..0..0....0..0..0..0..0..1....1..1..0..0..0..0....0..0..0..0..0..0
..0..0..1..1..0..0....0..0..0..0..0..1....1..1..1..0..0..0....0..0..1..1..0..0

Crossrefs

Sequence in context: A165837 A361148 A223820 * A324023 A221278 A239533

Adjacent sequences: A217977 A217978 A217979 * A217981 A217982 A217983

Keyword

nonn

Author

R. H. Hardin, Oct 16 2012

Status

approved