A233899 Number of (n+1)X(3+1) 0..6 arrays with every 2X2 subblock having the sum of the squares of all six edge and diagonal differences equal to 35

2688, 12152, 47232, 267792, 1194976, 8198512, 39075520, 304813760, 1473291680, 12478506368, 59636481088, 535236270096, 2503920262432, 23537439554576, 107432965882112, 1051469946423328, 4680802226580960, 47517003414905184

Offset

1,1

Comments

Column 3 of A233903

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical recurrence of order 69

Formula

Empirical recurrence of order 69 (see link above)

Example

Some solutions for n=3
..2..5..4..6....2..1..5..6....5..4..2..4....2..1..5..6....2..4..1..2
..3..1..3..2....5..3..4..2....3..1..0..1....5..3..4..2....0..3..5..3
..4..5..4..0....2..1..5..6....5..4..2..4....1..2..6..5....2..4..1..2
..3..1..3..2....5..3..4..2....2..6..3..6....5..3..4..2....6..3..5..3

Crossrefs

Sequence in context: A217335 A243993 A157613 * A350184 A186833 A229682

Adjacent sequences: A233896 A233897 A233898 * A233900 A233901 A233902

Keyword

nonn

Author

R. H. Hardin, Dec 17 2013

Status

approved