1565844

Appears in sequences

• Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite APC = AlPO4-C [Al16P16O64](1,2) starting from a T2 atom.at n=8A018977
• Triangle read by rows: T(n,k) is the number of nonseparable tree-rooted planar maps with n edges and k faces, n >= 0, k = 1..n+1.at n=60A342984