Number of (n+1)X(1+1) 0..1 arrays x(i,j) with row sums sum{x(i,j), j=1..1+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..n+1} nondecreasing.
A233297
Number of (n+1)X(1+1) 0..1 arrays x(i,j) with row sums sum{x(i,j), j=1..1+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..n+1} nondecreasing.
Terms
- a(0) =7a(1) =15a(2) =31a(3) =64a(4) =129a(5) =258a(6) =515a(7) =1029a(8) =2055a(9) =4107a(10) =8211a(11) =16410a(12) =32811a(13) =65624a(14) =131224a(15) =262372a(16) =524634a(17) =1049237a(18) =2098363a(19) =4196161a(20) =8391728a(21) =16783688a(22) =33567165a(23) =67128918a(24) =134250383a(25) =268502449a(26) =536999938a(27) =1073948247a(28) =2147837919a(29) =4295732271
External references
- oeis: A233297