294165domain: NAppears in sequencesCycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite BRE = Brewsterite (Sr,Ba)2[Al4Si12O32].10H2O starting with a T2 atom.at n=16A019086Number of equilateral triangles bounded by the sides and diagonals of a regular 3n-gon.at n=26A238822