140100870

Appears in sequences

• Denominators of Bernoulli numbers B_{2n}.at n=36A002445
• Denominators of Bernoulli numbers B_0, B_1, B_2, B_4, B_6, ...at n=37A006954
• Denominator of Sum_{p prime, p-1 divides 2*n} 1/p.at n=35A027762
• Distinct values of denominators of Bernoulli numbers B(2n) in order of their appearance as n grows.at n=22A090126
• Incrementally largest denominators of the Bernoulli numbers.at n=10A100194
• A051717(2n).at n=36A132084
• Denominators of expansion of e.g.f. x^2/(2*(cos(x)-1)), even powers only.at n=36A132095
• a(0)=3, a(n)=A002445(n) for n >= 1.at n=36A140814
• a(n) = A010696(n-1) * A086892(n).at n=35A141498
• a(n) = denominator(Bernoulli(prime(n) - 1)).at n=20A166062
• Bernoulli denominators A141056(n), with the exception a(1)=1.at n=72A176591
• a(n) = (2*n+1)*denominator((2*n+1)*Bernoulli(2*n)).at n=36A326580
• Indices k of records of low value of the ratios A348001(k)/A034444(k) between the number of distinct values of the unitary totient function applied to the unitary divisors of k and the number of unitary divisors of k.at n=13A348003
• Indices k of records of low value in the ratios A348173(k)/k.at n=13A348174