Consider the 2^n compositions of n and count only those ending in an odd part with row sum A001045.
A123638
Consider the 2^n compositions of n and count only those ending in an odd part with row sum A001045.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =8a(4) =25a(5) =83a(6) =299a(7) =1158a(8) =4813a(9) =21373a(10) =100955a(11) =504916a(12) =2662761a(13) =14754311a(14) =85643459a(15) =519493938a(16) =3285790317a(17) =21628225041a(18) =147887079907
External references
- oeis: A123638