111232

Appears in sequences

• Numbers n such that both n and n^2 contain "123" as a substring.at n=8A268278
• Numbers k such that (35*10^k - 737)/9 is prime.at n=21A295397
• Mark the points of the Farey series F_n on a strip of paper and wrap it around a circle of circumference 1 so the endpoints 0 and 1 coincide; draw a chord between every pair of the Farey points; a(n) is the number of vertices in the resulting graph.at n=10A359116