T(n,k)=Number of nXk (0,1,2) arrays of permanents of 2X2 subblocks of some (n+1)X(k+1) binary array with rows and columns of the latter in lexicographically nondecreasing order.
A227025
T(n,k)=Number of nXk (0,1,2) arrays of permanents of 2X2 subblocks of some (n+1)X(k+1) binary array with rows and columns of the latter in lexicographically nondecreasing order.
Terms
- a(0) =3a(1) =7a(2) =7a(3) =12a(4) =26a(5) =12a(6) =18a(7) =72a(8) =72a(9) =18a(10) =25a(11) =171a(12) =335a(13) =171a(14) =25a(15) =33a(16) =368a(17) =1366a(18) =1366a(19) =368a(20) =33a(21) =42a(22) =729a(23) =4948a(24) =10050a(25) =4948a(26) =729a(27) =42a(28) =52a(29) =1343
External references
- oeis: A227025