68443

Properties

Appears in sequences

• Primes such that the next n successive differences are identical.at n=16A087562
• Numbers k such that the square of k contains sigma(k) as a substring, in base 10.at n=18A113654
• Primes of the form 5n^2 - 2.at n=13A201784
• Triangle read by rows: T(n,k) is the number of bargraphs of semiperimeter n having k levels. A level in a bargraph is a maximal sequence of two or more adjacent horizontal steps; it is preceded and followed by either an up step or a down step.at n=42A273344
• Numbers n such that the decimal expansion of n^2 contains n+1.at n=13A282384
• Primes p such that p+6, p-6, 2*p+3 and 2*p-3 are prime.at n=35A356079
• Prime numbersat n=6804