116454478140
domain: N
Appears in sequences
- Let v = list of denominators of Farey series of order n (see A006843); let b(n) = Sum 1/(k*k'*(k+k')), where (k,k') are pairs of successive terms of v; a(n) = denominator of b(n).at n=14A278048
- Let v = list of denominators of Farey series of order n (see A006843); let b(n) = Sum k*k'/(k+k'), where (k,k') are pairs of successive terms of v; a(n) = denominator of b(n).at n=14A278561
- Right edge of triangle A240673: a(n) = A002110(n-1) * A079276(n).at n=10A391734