Triangle read by rows: T(n,k) is the number of labeled loop-threshold graphs on vertex set [n] with k loops, for n >= 0 and 0 <= k <= n.

A350745

Triangle read by rows: T(n,k) is the number of labeled loop-threshold graphs on vertex set [n] with k loops, for n >= 0 and 0 <= k <= n.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =4a(5) =1a(6) =1a(7) =12a(8) =12a(9) =1a(10) =1a(11) =32a(12) =84a(13) =32a(14) =1a(15) =1a(16) =80a(17) =460a(18) =460a(19) =80a(20) =1a(21) =1a(22) =192a(23) =2190a(24) =4600a(25) =2190a(26) =192a(27) =1a(28) =1a(29) =448

External references