Number of partitions of 2^n into powers of n.

Terms

a(0) =1a(1) =1a(2) =4a(3) =3a(4) =6a(5) =9a(6) =16a(7) =36a(8) =85a(9) =210a(10) =586a(11) =1914a(12) =6930a(13) =28178a(14) =125440a(15) =603350a(16) =3083410a(17) =17362239a(18) =112403052a(19) =820563290a(20) =6632950912a(21) =58209665965a(22) =544071039000