Number of (2+1)X(n+1) 0..1 arrays x(i,j) with row sums sum{j*x(i,j), j=1..n+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..2+1} nondecreasing.
A233367
Number of (2+1)X(n+1) 0..1 arrays x(i,j) with row sums sum{j*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) =14a(1) =46a(2) =113a(3) =250a(4) =530a(5) =1043a(6) =1939a(7) =3422a(8) =5802a(9) =9490a(10) =15005a(11) =23117a(12) =34764a(13) =51097a(14) =73611a(15) =104127a(16) =144806a(17) =198364a(18) =268178a(19) =358188a(20) =473002a(21) =618350a(22) =800556a(23) =1026633a(24) =1305256a(25) =1646531a(26) =2061507a(27) =2562949a(28) =3165957a(29) =3886739
External references
- oeis: A233367