1919190

Appears in sequences

• Denominators of Bernoulli numbers B_{2n}.at n=18A002445
• Denominators of Bernoulli numbers B_0, B_1, B_2, B_4, B_6, ...at n=19A006954
• Denominator of (2n+1) B_{2n}, where B_n are the Bernoulli numbers.at n=36A006955
• Denominator of (2n+1) B_{2n}, where B_n are the Bernoulli numbers.at n=54A006955
• Denominator of Bernoulli number B_n.at n=36A027642
• Denominator of Sum_{p prime, p-1 divides n} 1/p.at n=35A027760
• Denominator of Sum_{p prime, p-1 divides 2*n} 1/p.at n=17A027762
• Denominator of (n+1)*Bernoulli(n).at n=72A050932
• 1, followed by denominators of first differences of Bernoulli numbers (B(i)-B(i-1)).at n=37A051717
• 1, followed by denominators of first differences of Bernoulli numbers (B(i)-B(i-1)).at n=36A051717
• a(n) is the smallest positive integer such that a(n)*(1^n + 2^n + ... + x^n) is a polynomial in x with integer coefficients.at n=36A064538
• a(n) = (2^(n-1)/(2n)!)*Product_{k=1..n} q(k) where q(n) is the denominator of B(2n), the 2n-th Bernoulli number.at n=17A069267
• Distinct values of denominators of Bernoulli numbers B(2n) in order of their appearance as n grows.at n=11A090126
• Incrementally largest denominators of the Bernoulli numbers.at n=8A100194
• Bernoulli number denominators, with zeros at the odd places.at n=36A106458
• a(n) = denominator(Bernoulli(prime(n) - 1))/prime(n).at n=28A110936
• a(n) = denominator(Bernoulli(prime(n) - 1))/prime(n).at n=20A110936
• Denominators of z-sequence for the Sheffer matrix (triangle) A094816 (coefficients of Poisson-Charlier polynomials).at n=36A130190
• A051717(2n).at n=18A132084
• a(0)=3, a(n)=A002445(n) for n >= 1.at n=18A140814