Number of nX7 nonnegative integer arrays with upper left 0 and lower right n+7-5 and value increasing by 0 or 1 with every step right or down.
A252975
Number of nX7 nonnegative integer arrays with upper left 0 and lower right n+7-5 and value increasing by 0 or 1 with every step right or down.
Terms
- a(0) =20a(1) =483a(2) =8694a(3) =112877a(4) =1100210a(5) =8528422a(6) =54926890a(7) =303382053a(8) =1471499970a(9) =6383377435a(10) =25130419118a(11) =90859574359a(12) =304675148476a(13) =955390407363
External references
- oeis: A252975