65113

Appears in sequences

• Numbers n such that n = pi(n) + phi(n), where pi = A000720, phi = A000010.at n=9A037170
• Numbers n such that n is the phi(n)-th nonprime number.at n=8A100411
• Numbers k with the property that it is possible to write the base 2 expansion of k as concat(a_2,b_2), with a_2>0 and b_2>0 such that, converting a_2 and b_2 to base 10 as a and b, we have sigma(a + b) = sigma(k).at n=25A258843
• G.f. is the cube of the g.f. of A006950.at n=21A273226
• Numbers n such that n = pi(n) + uphi(n), where pi = A000720, uphi = A047994.at n=11A298761