Number T(n,k) of endofunctions on [n] with exactly k connected components and no fixed points; triangle T(n,k), n>=0, 0<=k<=floor(n/2), read by rows.

A350452

Number T(n,k) of endofunctions on [n] with exactly k connected components and no fixed points; triangle T(n,k), n>=0, 0<=k<=floor(n/2), read by rows.

Terms

    a(0) =1a(1) =0a(2) =0a(3) =1a(4) =0a(5) =8a(6) =0a(7) =78a(8) =3a(9) =0a(10) =944a(11) =80a(12) =0a(13) =13800a(14) =1810a(15) =15a(16) =0a(17) =237432a(18) =41664a(19) =840a(20) =0a(21) =4708144a(22) =1022252a(23) =34300a(24) =105a(25) =0a(26) =105822432a(27) =27098784a(28) =1286432a(29) =10080

External references