Number of (n+1) X (6+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)+x(i-1,j) in the j direction.

A250753

Number of (n+1) X (6+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)+x(i-1,j) in the j direction.

Terms

    a(0) =402a(1) =1305a(2) =4182a(3) =13149a(4) =40722a(5) =124785a(6) =379662a(7) =1149669a(8) =3470442a(9) =10454265a(10) =31448742a(11) =94518189a(12) =283898562a(13) =852383745a(14) =2558527422a(15) =7678334709a(16) =23040509082a(17) =69132537225a(18) =207419631702a(19) =622302935229

External references