a(n)=Sum(i+j+k+l+...+r+s=n) A005316(i)*A005316(j)*...*A005316(s) and the ordered partition of n runs over all odd i, all even j,k,.., r, all i,j,...,r,s>=1.
A107321
a(n)=Sum(i+j+k+l+...+r+s=n) A005316(i)*A005316(j)*...*A005316(s) and the ordered partition of n runs over all odd i, all even j,k,.., r, all i,j,...,r,s>=1.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =3a(4) =8a(5) =14a(6) =42a(7) =79a(8) =254a(9) =506a(10) =1702a(11) =3548a(12) =12320a(13) =26666a(14) =94794a(15) =211751a(16) =766362a(17) =1758352a(18) =6453812a(19) =15150922a(20) =56238710a(21) =134659120
External references
- oeis: A107321