T(n,k) = Number of (n+1) X (k+1) 0..3 arrays with every 2 X 2 subblock summing to 2 3 4 5 6 7 8 9 or 10.
A251524
T(n,k) = Number of (n+1) X (k+1) 0..3 arrays with every 2 X 2 subblock summing to 2 3 4 5 6 7 8 9 or 10.
Terms
- a(0) =246a(1) =3798a(2) =3798a(3) =58618a(4) =227174a(5) =58618a(6) =904734a(7) =13580282a(8) =13580282a(9) =904734a(10) =13963994a(11) =811863390a(12) =3143505700a(13) =811863390a(14) =13963994a(15) =215525422a(16) =48535019898a(17) =727704325306a(18) =727704325306a(19) =48535019898a(20) =215525422a(21) =3326498602
External references
- oeis: A251524