242209

Appears in sequences

• Numerical distance between m-th and (n+m)-th circles in a loxodromic sequence of circles in which each 4 consecutive circles touch.at n=14A045821
• p^2 + (p+2)^2 - 1 where (p,p+2) is the n-th twin prime pair.at n=20A184417
• a(n) = [x^n] Product_{k>=1} (1 + x^k)^binomial(k+n-1,n-1).at n=7A344098