42159
domain: N
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 LTN = Linde Type N Na384[Al384Si384O1536].518H2O starting with a T3 atom.at n=6A019038
- Numbers n such that 19*n^2 + 19*n + 1 is a square.at n=4A101180
- Numbers n such that the sum of the digits of n^phi(n) is divisible by n.at n=28A109660
- Composite squarefree integers for which the sum of the squares of their factors is a square.at n=27A379780