197095298400domain: NAppears in sequencesa(n) = lcm{prime(i)-1, i=1..n}.at n=26A058254Distinct values of lcm_{i=1..n} (p(i)-1), where p() are the primes.at n=14A058255a(n) = denominator(Sum_{k=1..n} 1/(prime(k)-1)).at n=25A128646a(n) = denominator(Sum_{k=1..n} (-1)^(k+1)/(prime(k)-1)).at n=25A128648