568260

Appears in sequences

• Denominator in Feinler's formula for unsigned Bernoulli number |B_{2n}|.at n=20A002444
• Denominators of Cauchy numbers of second type (= Bernoulli numbers B_n^{(n)}).at n=40A002790
• a(n) = n*(n+1)*(2*n+1)*(3*n+1)/6.at n=27A011195
• a(n) = denominator of sum of reciprocals of the terms of the continued fraction for H(n) = Sum_{k=1..n} 1/k.at n=44A112287
• Numbers with prime factorization pqrst^2u^2.at n=26A190380
• Number of n X 7 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 1 and 1 1 1 vertically.at n=18A208779