283623domain: NAppears in sequencesCycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite ATO = AlPO4-31 [ Al18P18O72 ].at n=7A018984Sum_{j>=1} j^n*2^j/binomial(2*j,j) = r_n*Pi/2 + s_n with integer r_n and s_n; sequence gives s_n.at n=7A180875