T(n,k)=Number of nXk binary arrays whose sum with another nXk binary array containing no more than a single 1 has rows and columns in lexicographically nondecreasing order.
A225900
T(n,k)=Number of nXk binary arrays whose sum with another nXk binary array containing no more than a single 1 has rows and columns in lexicographically nondecreasing order.
Terms
- a(0) =2a(1) =4a(2) =4a(3) =7a(4) =12a(5) =7a(6) =11a(7) =33a(8) =33a(9) =11a(10) =16a(11) =78a(12) =145a(13) =78a(14) =16a(15) =22a(16) =162a(17) =545a(18) =545a(19) =162a(20) =22a(21) =29a(22) =304a(23) =1770a(24) =3459a(25) =1770a(26) =304a(27) =29a(28) =37a(29) =527
External references
- oeis: A225900