41917

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 AEL = AlPO4-11 [Al20P20O80] starting with a T1 atom.at n=6A018945
• Numbers k such that 9*10^k - 1 is prime.at n=12A056725
• Integers arising in A133677.at n=28A133645
• Expansion of x*(403+2967*x+1047*x^2-x^3)/(1-x)^4.at n=3A165808
• Composite numbers which contain their sum of aliquot parts as a substring.at n=15A225417
• Semiprimes of the form S(n) + T(n) where S(n) and T(n) are the n-th square and the n-th triangular numbers.at n=25A240914