Number of compositions of n into distinct parts where each part i is marked with a word of length i over a nonary alphabet whose letters appear in alphabetical order.
A261847
Number of compositions of n into distinct parts where each part i is marked with a word of length i over a nonary alphabet whose letters appear in alphabetical order.
Terms
- a(0) =1a(1) =9a(2) =45a(3) =975a(4) =3465a(5) =25047a(6) =471669a(7) =1542519a(8) =8361540a(9) =43916950a(10) =934748298a(11) =2560160538a(12) =12924414750a(13) =52656337800a(14) =271075650210
External references
- oeis: A261847