283800

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 AFO = AlPO4-41 [Al20P20O80] starting with a T3 atom.at n=7A018957
• a(1)=2. a(n) is the a(n-1)st integer from among those positive integers coprime to a(n-1).at n=26A126882
• Numbers k such that k^2 + 1 is a Sarrus number (pseudoprime to base 2).at n=11A135590