69674

Appears in sequences

• Numbers k such that 8*R_k - 5 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=24A099422
• 144*n^2 - n.at n=21A156635
• a(n) = 576*n^2 - 2*n.at n=10A158371
• a(n) = 484*n^2 - 22.at n=11A158627