10761681

Appears in sequences

• Number of closed walks of length n along the edges of a tetrahedron based at a vertex.at n=16A054878
• Closed walks of length 2n along the edges of a cube based at a vertex.at n=8A054879
• Binomial transform of (1,-1,4,-16,64,-256,1024,...) = (3*0^n-(-4)^n)/4.at n=16A084567
• Triangle read by rows: row n contains n terms of the arithmetic progression having first term 1 and common difference 2[n^(n-1)-1]/(n-1).at n=37A111568
• a(n) = (2 + (-1)^n + 3^n)/4.at n=16A122983
• Numbers occurring in A137822 : first differences of numbers n such that 3 | sum( Catalan(k), k=1..2n).at n=23A137823
• Array read by antidiagonals: A(n, L) is the number of closed walks of length 2L along the edges of an n-cube based at a vertex, for n >= 1 and L >= 1.at n=47A286899