Number T(n,k) of endofunctions on [n] with exactly k isolated fixed points; triangle T(n,k), n >= 0, 0 <= k <= n, read by rows.
A350212
Number T(n,k) of endofunctions on [n] with exactly k isolated fixed points; triangle T(n,k), n >= 0, 0 <= k <= n, read by rows.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =3a(4) =0a(5) =1a(6) =17a(7) =9a(8) =0a(9) =1a(10) =169a(11) =68a(12) =18a(13) =0a(14) =1a(15) =2079a(16) =845a(17) =170a(18) =30a(19) =0a(20) =1a(21) =31261a(22) =12474a(23) =2535a(24) =340a(25) =45a(26) =0a(27) =1a(28) =554483a(29) =218827
External references
- oeis: A350212