Triangular array read by rows. T(n,k) is the number of idempotent Boolean relation matrices with rank k, n >= 0, 0 <= k <= n.
A363232
Triangular array read by rows. T(n,k) is the number of idempotent Boolean relation matrices with rank k, n >= 0, 0 <= k <= n.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =7a(5) =3a(6) =1a(7) =37a(8) =66a(9) =19a(10) =1a(11) =175a(12) =975a(13) =990a(14) =219a(15) =1a(16) =781a(17) =12090a(18) =32575a(19) =23345a(20) =4231a(21) =1a(22) =3367a(23) =135903a(24) =866550a(25) =1514610a(26) =814903a(27) =130023
External references
- oeis: A363232