64004

Appears in sequences

• Numbers k such that phi(k) = phi(k+1).at n=33A001274
• Number of compositions of n such that every part occurs with the same multiplicity.at n=24A098504
• A number n is included in the sequence if and only if the n-th integer from among those positive integers which are coprime to n+1 = the (n+1)-st integer from among those positive integers which are coprime to n.at n=11A139766
• a(n) = n^3 + 4.at n=40A274077
• Number of compositions (ordered partitions) of n into heptagonal numbers (A000566).at n=51A322799