214370

Appears in sequences

• Denominators of the first differences of 1/(n^2 + 1).at n=21A033466
• Denominators of Hurwitz numbers H_n (coefficients in expansion of Weierstrass P-function).at n=23A047817
• Abundant numbers of the form k^2 + 1.at n=6A178458
• Squarefree integers m > 1 such that if prime p divides m, then s_p(m) >= p and s_p(m) == 2 (mod p-1), where s_p(m) is the sum of the base p digits of m.at n=29A324404
• Integers of the form k^2 + 1, where k >= 1, that are the product of two other integers of the form k^2 + 1, where k >= 1.at n=31A372496