T(n,k)=Number of nXk binary arrays whose sum with another nXk binary array containing no more than two 1s has rows and columns in lexicographically nondecreasing order.

A225982

T(n,k)=Number of nXk binary arrays whose sum with another nXk binary array containing no more than two 1s has rows and columns in lexicographically nondecreasing order.

Terms

    a(0) =2a(1) =4a(2) =4a(3) =8a(4) =15a(5) =8a(6) =15a(7) =48a(8) =48a(9) =15a(10) =26a(11) =138a(12) =252a(13) =138a(14) =26a(15) =42a(16) =350a(17) =1178a(18) =1178a(19) =350a(20) =42a(21) =64a(22) =790a(23) =4722a(24) =9113a(25) =4722a(26) =790a(27) =64a(28) =93a(29) =1616

External references