22319

Appears in sequences

• a(n) = a(n-1)*a(n-2) - 1.at n=10A001054
• Number of polygonal cacti (Husimi graphs) with n nodes.at n=18A035085
• Number of refactorable integers (A033950) of binary order (A029837) n.at n=20A036761
• Frobenius number of the numerical semigroup generated by 3 consecutive triangular numbers.at n=28A069755
• a(n) = 4*n^3 - 3*n^2 - 2*n - 1.at n=18A268644
• Partial sums of A294016.at n=45A294017
• a(n) is the least nonnegative integer value of n^(n+1)/k - (n+1)^n.at n=3A340353