22320522

Appears in sequences

• a(n) = (n-1)*3^(n-2), n > 0.at n=14A027471
• Triangle whose (i,j)-th entry is binomial(i,j)*9^(i-j)*6^j.at n=29A038296
• Number of meaningful differential operations of the n-th order on the space R^8.at n=27A090993
• a(n) = 9^n * n*(n+1).at n=6A116176
• Denominators of Blandin-Diaz compositional Bernoulli numbers C_2,n.at n=26A133005
• Denominators of ternary BBP-type series for log(5).at n=10A164985
• Row sums of A211230.at n=26A211231
• a(n) = 2*n*3^(2*n-1).at n=7A230540
• Sum of the degrees of asymmetry of all ternary words of length n.at n=14A274499
• Triangle T(n,k) = 3*T(n-1,k) + T(n-4,k-1) for k = 0..floor(n/4), with T(0,0) = 1 and T(n,k) = 0 for n or k < 0, read by rows.at n=46A318773
• 3-parking triangle T(r, i, 3) read by rows: T(r, i, k) = (r + 1)^(i-1)*binomial(k*(r + 1) + r - i - 1, r - i) with k = 3 and 0 <= i <= r.at n=42A329059
• a(n) = 3^(n-2)*(binomial(n,2) + 3*n + 9).at n=13A382618
• G.f. A(x) satisfies A(x) = 1 + 9*x*A(x)^(5/3).at n=6A385119