Number of (n+1)X3 0..2 arrays with the determinants of 2X2 subblocks nondecreasing rightwards and downwards.
A205209
Number of (n+1)X3 0..2 arrays with the determinants of 2X2 subblocks nondecreasing rightwards and downwards.
Terms
- a(0) =452a(1) =3248a(2) =23578a(3) =203313a(4) =1846145a(5) =17014174a(6) =157776973a(7) =1467364433a(8) =13666197180a(9) =127366953026
External references
- oeis: A205209