22402

Appears in sequences

• Number of points on surface of truncated tetrahedron: a(n) = 14*n^2 + 2 for n > 0, a(0)=1.at n=40A005905
• Molien series for A_9.at n=44A008632
• a(n)=Sum{T(n,j): j=1,2,...,n}, array T given by A048212.at n=30A048222
• a(n) = A306912(n) - 2.at n=28A209489
• Number of (n+1) X (2+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).at n=7A235081
• T(n,k) is the number of (n+1) X (k+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).at n=37A235087
• a(n) is the smallest nonnegative integer m such that m! contains a string of exactly n consecutive 8's, or -1 if no such m exists.at n=9A254716
• Numbers k such that sopfr(k) = tau(k)^3.at n=10A305349
• Expansion of e.g.f.: exp(exp(x) - 3*x - 1).at n=10A346738
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where T(n,0) = 0^n and T(n,k) = k * Sum_{r=0..n} binomial(n,r) * binomial(3*r+k,n)/(3*r+k) for k > 0.at n=60A378318
• a(n) = Sum_{k=0..n} binomial(n,k) * binomial(n+3*k-1,3*k).at n=5A378378
• a(n) = n*(n + 1)*(n^2 + 17*n + 54)/24.at n=23A387204