40089

Appears in sequences

• Numbers n such that prime(n) == -1 (mod n).at n=14A045924
• Duplicate of A045924.at n=14A049204
• Numbers k that divide prime(k)+1 or prime(k)-1.at n=22A078931
• Numbers k such that prime(k+1) == 5 (mod k).at n=10A105329
• a(n) = 12167*n - 8579.at n=3A156845
• Expansion of (1 - t)*(1 + t)^x.at n=50A227342
• Expansion of Product_{k>=1} (1 + x^k) / (1 - x^(3*k)).at n=49A285445
• Number of distinct lines passing through exactly two points in a triangular grid of side n.at n=30A362014