252902domain: NAppears in sequencesCycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite RSN = RUB-17 K4Na12[Zn8Si28O72].18H2O starting with a T3 atom.at n=16A019221Number of equilateral triangles bounded by the sides and diagonals of a regular 3n-gon.at n=25A238822