52039

Appears in sequences

• From expansion of falling factorials.at n=15A005492
• Lucky numbers with smallest increasing gaps (upper terms).at n=29A031885
• Interprimes (A024675) which are of the form s*prime, s=13.at n=24A075288
• a(n) = (n^4-3*n^2+4*n+2)/2.at n=18A387525