69597
domain: N
Appears in sequences
- Sort then Add, a(1) =9.at n=19A033896
- Sort then Add, a(1)=27.at n=17A033903
- a(1)=1. a(n) = a(n-1) + (sum of the earlier terms {among terms a(1) through a(n-1)} which are coprime to n).at n=14A127075
- a(n) = n*(n+1)*(8*n + 1)/6.at n=37A132124
- Numbers n such that n, n+1, and the sum of those two numbers each have 4 or more distinct prime factors.at n=2A168630
- a(n) is the denominator of (120*n^2 + 151*n + 47)/(512*n^4 + 1024*n^3 + 712*n^2 + 194*n + 15).at n=4A374581