34099

Appears in sequences

• Numbers k such that j(k)*phi(k) = sigma(phi(k)), j(k) = A033831(k).at n=11A033856
• Reverse of smallest prime factor of k = largest prime factor of k+1; a(1)=1.at n=27A071392
• Number of (w,x,y,z) with all terms in {1,...,n} and w*x+y*z<=n^2.at n=14A212150
• Molien series for invariants of finite Coxeter group A_12.at n=57A266781
• Numbers k such that (58*10^k + 329)/9 is prime.at n=21A294570
• Number of free polyforms made of T-pipes connected end-to-end (not perpendicular).at n=6A390515
• Number of integer compositions of n that are the first sums of some composition with all parts > 1.at n=43A391235