6692786100

Appears in sequences

• Least common multiple of {b(1),...,b(n)}, where b(k) = k(k+1)(2k+1)/6 = A000330(k).at n=12A051538
• Denominator of partial sums of a certain series.at n=8A101628
• Denominator of Sum_{k=1..n} (-1)^k / semiprime(k).at n=15A140123
• a(n) = lcm(first n semiprimes).at n=15A164853
• As n increases, the reciprocal of a(n) = asymptotic fraction of positive integers whose longest string of consecutive divisors is A181062(n).at n=13A181121
• a(n) = n!*(floor(n/30))!/((floor(n/2))!*(floor(n/3))!*(floor(n/5))!).at n=25A211418
• Row 2 of A276945: a(n) = A002110(n) + A002110(n+1).at n=9A276939
• Least number with the prime signature of the n-th Catalan number.at n=25A278258
• Cubefree superabundant numbers: cubefree numbers (A004709) k such that sigma(k)/k > sigma(j)/j for all cubefree numbers j < k.at n=23A308618
• Cubefree colossally superabundant numbers: cubefree numbers (A004709) k for which there is a positive exponent epsilon such that sigma(k)/k^{1 + epsilon} >= sigma(j)/j^{1 + epsilon} for all cubefree j > 1, so that k attains the maximum value of sigma(k)/k^{1 + epsilon} over the cubefree numbers.at n=11A309875
• Squares of terms are the intersection of A025487 and A217584.at n=18A333969
• Least integers of their prime signature (A025487) whose average number of distinct prime factors of their divisors is an integer.at n=29A346015
• Indices of records in A353898.at n=33A353899
• a(n) is the lcm of the denominators of the terms in the n-th row of M where M is the inverse of the matrix generated by the triangle A368846.at n=12A369135
• a(n) is the denominator of x(n) = (2*x(n-1) + 1/n) mod 1, with x(0) = 0.at n=25A374333
• Numbers that have more cubefree divisors than any smaller number.at n=30A377139
• Numbers k such that k is a multiple of A327860(k), where A327860 is the arithmetic derivative of the primorial base exp-function.at n=33A380527
• Numbers k such that A383546(k) > A383546(m) for all m < k.at n=29A383547