139137
domain: N
Appears in sequences
- List of pairs of primes in reverse order.at n=16A007797
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite MOR = Mordenite Na8[Al8Si40O96].24H2O starting with a T1 atom.at n=15A019179
- Concatenation of twin primes in reverse order.at n=10A107309
- a(0)=1, a(1)=2; a(2n) = 2*a(2n-1)+1; a(2n+1) = a(2n) + x, where x is the least number not yet the difference of two terms.at n=29A111328