a(n) is the numerator of the sum of reciprocals of primes not exceeding n and not dividing binomial(2*n, n).

A334074

a(n) is the numerator of the sum of reciprocals of primes not exceeding n and not dividing binomial(2*n, n).

Terms

    a(0) =0a(1) =0a(2) =1a(3) =1a(4) =1a(5) =1a(6) =12a(7) =1a(8) =10a(9) =71a(10) =16a(11) =103a(12) =215a(13) =311a(14) =311a(15) =311a(16) =431a(17) =30a(18) =791a(19) =36a(20) =575a(21) =8586a(22) =222349a(23) =222349a(24) =182169a(25) =144961a(26) =747338a(27) =8630a(28) =1343a(29) =89513

External references