T(n,k)=Number of nXk nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors.
A208581
T(n,k)=Number of nXk nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =5a(4) =12a(5) =5a(6) =15a(7) =152a(8) =159a(9) =15a(10) =52a(11) =3024a(12) =15215a(13) =3233a(14) =52a(15) =203a(16) =84124a(17) =2946848a(18) =3012383a(19) =90863a(20) =203a(21) =877a(22) =3057664a(23) =960563033a(24) =7289707650a(25) =992352688a(26) =3319375a(27) =877a(28) =4140a(29) =139056380
External references
- oeis: A208581