116480

Appears in sequences

• a(n) = Sum_{i=1..floor((n+1)/4)} a(2*i-1) * a(n-2*i+1), with a(1)=a(2)=1 and a(3)=7.at n=15A024733
• Sextuple factorial numbers: a(n) = Product_{k=0..n-1} (6*k+2).at n=5A047657
• Scaled triangle A067327.at n=30A067328
• Sextuple factorials, 6-factorials, n!!!!!!, n!6.at n=26A085158
• Triangle read by rows: T(n,k) number of tilings of a 2n X 3 grid by dominoes, 2k of which are in a vertical position (0<=k<=n).at n=61A123519
• Triangle read by rows: t(n,m)=If[m == 0, 1, Product[m*k + 2, {k, 0, n}]].at n=25A153190
• a(n) = 144*n^2 - 161*n + 45.at n=28A156711
• a(n) = 10*a(n-1) + 4*a(n-2), with a(0)=0, a(1)=1.at n=6A190954
• Number of (n+2)X(n+2) 0..3 arrays with every consecutive three elements in every row and column not having exactly two distinct values, and in every diagonal and antidiagonal having exactly two distinct values, and new values 0 upwards introduced in row major order.at n=15A253017
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 345", based on the 5-celled von Neumann neighborhood.at n=16A281221
• a(n) = n * 2^n * binomial(4*n, n).at n=4A378804
• Denominators of rational coefficients which are ratio of Brent's coefficients -A[n,2]/A343480.at n=29A380948
• Denominators of rational coefficients which are ratio of Brent's coefficients -A[n,2]/A343480.at n=37A380948