3404310

Appears in sequences

• Denominators of Bernoulli numbers B_{2n}.at n=42A002445
• Denominators of Bernoulli numbers B_0, B_1, B_2, B_4, B_6, ...at n=43A006954
• Denominator of Sum_{p prime, p-1 divides 2*n} 1/p.at n=41A027762
• Distinct values of denominators of Bernoulli numbers B(2n) in order of their appearance as n grows.at n=26A090126
• A051717(2n).at n=42A132084
• Denominators of expansion of e.g.f. x^2/(2*(cos(x)-1)), even powers only.at n=42A132095
• a(0)=3, a(n)=A002445(n) for n >= 1.at n=42A140814