61335
domain: N
Appears in sequences
- Numbers n such that n and n+-1 have 4 distinct prime factors.at n=7A168628
- a(n) = F(n+8) - (1/6)*(n^4-2*n^3+26*n^2+47*n+132) where F(i) = Fibonacci numbers (A000045).at n=16A220889
- a(n) = n*(n + 1)*(5*n - 4)/2.at n=29A237616
- Numbers k such that k-1, k and k+1 are all composite with four, five and six (not necessarily distinct) prime factors respectively.at n=13A342246