Triangular array read by rows, T(n,k) is the number of functions from {1,2,...,n} into {1,2,...,n} with maximum value of k.
A199656
Triangular array read by rows, T(n,k) is the number of functions from {1,2,...,n} into {1,2,...,n} with maximum value of k.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =1a(4) =7a(5) =19a(6) =1a(7) =15a(8) =65a(9) =175a(10) =1a(11) =31a(12) =211a(13) =781a(14) =2101a(15) =1a(16) =63a(17) =665a(18) =3367a(19) =11529a(20) =31031a(21) =1a(22) =127a(23) =2059a(24) =14197a(25) =61741a(26) =201811a(27) =543607a(28) =1a(29) =255
External references
- oeis: A199656