20765

Appears in sequences

• Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite MFS = ZSM-57 H1.5[Al1.5Si34.5O72] starting with a T5 atom.at n=13A019173
• Numbers k such that the continued fraction for sqrt(k) has period 35.at n=36A020374
• a(1) = 3; a(n+1) = a(n)-th composite.at n=38A022451
• Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 11.at n=19A051976
• Numbers k such that k![4] - 4 is prime, where k![4] = A007662(k) = quadruple factorial.at n=42A328454
• Number of 2-distant 3-noncrossing partitions of {1,...,n}.at n=9A366774