27577

Appears in sequences

• Numbers k such that 4*phi(k) = 3*sigma(k).at n=6A065819
• Triangle read by rows: a(m,m) = 1, for all m. For n < m, a(m,n) = a(m-1,n) + (sum of all terms in rows 1 through m-1).at n=28A159924
• Number of integer partitions of n that can be partitioned into distinct pairs of (possibly equal) parts.at n=45A338916
• Number of perfect-powers x in the range 2^n < x < 2^(n+1).at n=32A377467
• a(n) = 2*n^3 - 3*n + 1.at n=24A377663