12932920

Appears in sequences

• Denominators of partial sums for a series for 2*Pi*sqrt(3)/9.at n=9A130554
• As n increases, the reciprocal of a(n) = asymptotic fraction of positive integers whose longest string of consecutive divisors is A181062(n).at n=11A181121
• Let v = list of denominators of Farey series of order n (see A006843); let b(n) = Sum 1/(k+k'), where (k,k') are pairs of successive terms of v; a(n) = denominator of b(n).at n=9A278051
• a(n) = lcm({1, 2, ..., n}) * (n + 1) / n for n > 0, a(0) = 1.at n=18A387027