498222

Appears in sequences

• Let b(1)=x, b(2)=y, k*b(k)=(2k-1)*b(k-1) + 3(k+1)*b(k-2); then b(n)=a(n)*x+c(n)/3*y.at n=13A076148
• Molien series for complete weight enumerators of self-dual codes over GF(9) containing the all-ones vector.at n=12A092072