login
A251520
Number of (n+1)X(4+1) 0..3 arrays with every 2X2 subblock summing to 2 3 4 5 6 7 8 9 or 10
1
904734, 811863390, 727704325306, 652338909221254, 584773855532345166, 524207148511603961602, 469913480156252272754666, 421243168176488059719015278, 377613782427648058582852112694
OFFSET
1,1
COMMENTS
Column 4 of A251524
FORMULA
Empirical recurrence of order 40 (see link above)
EXAMPLE
Some solutions for n=1
..0..0..2..2..1....0..2..2..2..2....0..0..1..0..2....0..0..0..0..0
..3..0..1..3..2....0..2..1..2..2....2..2..0..1..0....2..2..3..2..3
CROSSREFS
Sequence in context: A209208 A209209 A104847 * A250542 A251799 A348078
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 03 2014
STATUS
approved