Number of (2+1)X(n+1) 0..2 arrays x(i,j) with row sums sum{x(i,j), j=1..n+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..2+1} nondecreasing.
A233376
Number of (2+1)X(n+1) 0..2 arrays x(i,j) with row sums sum{x(i,j), j=1..n+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..2+1} nondecreasing.
Terms
- a(0) =117a(1) =1046a(2) =7595a(3) =46935a(4) =254725a(5) =1242042a(6) =5538026a(7) =22884715a(8) =88577443a(9) =323908967a(10) =1126962281a(11) =3752622108a(12) =12018652575a(13) =37179997956a(14) =111500267903a(15) =325181295220a(16) =924812060067
External references
- oeis: A233376