a(n) = Sum{j_1 + ... + j_n = n} Sum_{k=1..n} k*C(n-1,k-1), where the outer sum is over all partitions of n.
A084362
a(n) = Sum{j_1 + ... + j_n = n} Sum_{k=1..n} k*C(n-1,k-1), where the outer sum is over all partitions of n.
Terms
- a(0) =1a(1) =4a(2) =12a(3) =35a(4) =91a(5) =234a(6) =566a(7) =1353a(8) =3133a(9) =7172a(10) =16108a(11) =35871a(12) =78891a(13) =172338a(14) =373386a(15) =804649a(16) =1723957a(17) =3678128a(18) =7813748a(19) =16543943a(20) =34913591a(21) =73480386a(22) =154249498a(23) =323078245a(24) =675271797a(25) =1408772440a(26) =2933901672a(27) =6100500103
External references
- oeis: A084362