42942

Appears in sequences

• T(n,k) = S(2n,n-1,k-1), 0 <= k <= n, n >= 0, array S as in A050157.at n=50A050160
• T(n, k) = S(2n+2, n+2, k+2) for 0<=k<=n and n >= 0, array S as in A050157.at n=40A050163
• Rounded volume of a regular icosahedron with edge length n.at n=27A071402
• Sequence of which A078783 is the Recamán transform.at n=43A117073
• Number at start of segment n of A117073.at n=14A117074
• Number of valley-avoiding compositions with positive parts.at n=18A128805
• G.f.: A(x) = exp( Sum_{n>=1} (1 + A000204(n)*x)^n * x^n/n ).at n=9A163189
• Triangle read by rows: T(n,k) (n >= 5, 4 <= k <= n-1) = number of lattice 3-polytopes of width larger than 1, size n, and k vertices.at n=46A319958