74469

Appears in sequences

• Expansion of 1/((1-2x)(1-7x)(1-8x)(1-9x)).at n=4A028005
• Triangle T(n,k), 0 <= k <= n, read by rows, defined by: T(0,0) = 1, T(n,k) = 0 if n<k, T(n,0) = T(n-1,0) + T(n-1,1) and for k >= 1: T(n,k) = T(n-1,k-1) + x*T(n-1,k) + T(n-1,k+1) with x = 3.at n=46A110877
• Number of skew Dyck paths of semilength n ending with a left step.at n=10A128714
• Generalized Riordan array based on the binomial transform of the Fine's numbers A000957.at n=57A187914
• a(n+3) = 2*a(n+2) + a(n+1) + a(n) with a(0)=3, a(1)=2, a(2)=6.at n=12A276225
• Indices of A002110(n) in A055932.at n=12A331938