Number of (n+1) X 2 0..2 arrays with the determinants of 2 X 2 subblocks nondecreasing rightwards and downwards.
A205208
Number of (n+1) X 2 0..2 arrays with the determinants of 2 X 2 subblocks nondecreasing rightwards and downwards.
Terms
- a(0) =81a(1) =452a(2) =1970a(3) =8128a(4) =33386a(5) =139390a(6) =588254a(7) =2496440a(8) =10620486a(9) =45235186a(10) =192770330a(11) =821702110a(12) =3502996038a(13) =14934443890a(14) =63672178746a(15) =271466142110
External references
- oeis: A205208