A218081 Number of nX5 arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random 0..1 nX5 array

10, 38, 246, 1508, 9570, 60258, 380952, 2406376, 15206400, 96092194, 607206590, 3837073622, 24247012810, 153220885972, 968228300896, 6118393119702, 38663138411874, 244318751285028, 1543890515080300, 9756099061245452

Offset

1,1

Comments

Column 5 of A218084

Links

R. H. Hardin, Table of n, a(n) for n = 1..72

Formula

Empirical: a(n) = 5*a(n-1) +19*a(n-2) -37*a(n-3) -231*a(n-4) +48*a(n-5) +1233*a(n-6) +765*a(n-7) -3665*a(n-8) -3352*a(n-9) +5681*a(n-10) +6688*a(n-11) -7953*a(n-12) -1406*a(n-13) +2852*a(n-14) +584*a(n-15) -3967*a(n-16) +3715*a(n-17) -278*a(n-18) -660*a(n-19) -621*a(n-20) +458*a(n-21) +99*a(n-22) -4*a(n-23) for n>25

Example

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

Crossrefs

Sequence in context: A050479 A288391 A220206 * A219823 A216591 A249707

Adjacent sequences: A218078 A218079 A218080 * A218082 A218083 A218084

Keyword

nonn

Author

R. H. Hardin Oct 20 2012

Status

approved