Number of compositions of n into distinct parts where each part i is marked with a word of length i over a quinary alphabet whose letters appear in alphabetical order and all letters occur at least once in the composition.
A261856
Number of compositions of n into distinct parts where each part i is marked with a word of length i over a quinary alphabet whose letters appear in alphabetical order and all letters occur at least once in the composition.
Terms
- a(0) =31a(1) =1305a(2) =4955a(3) =26765a(4) =124450a(5) =2008546a(6) =4399870a(7) =17016950a(8) =51516925a(9) =187653115a(10) =2298210803a(11) =4405690315a(12) =14002637160a(13) =37448507530a(14) =109070884580a(15) =308549728478
External references
- oeis: A261856