Triangular array read by rows. T(n,k) is the number of labeled digraphs on [n] with exactly k source-like components, n >= 0, 0 <= k <= n.
A361579
Triangular array read by rows. T(n,k) is the number of labeled digraphs on [n] with exactly k source-like components, n >= 0, 0 <= k <= n.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =3a(5) =1a(6) =0a(7) =51a(8) =12a(9) =1a(10) =0a(11) =3614a(12) =447a(13) =34a(14) =1a(15) =0a(16) =991930a(17) =53675a(18) =2885a(19) =85a(20) =1a(21) =0a(22) =1051469032a(23) =21514470a(24) =741455a(25) =16665a(26) =201a(27) =1a(28) =0a(30) =30405612790
External references
- oeis: A361579