6126120

Appears in sequences

• a(0)=12; thereafter a(n) = 12 times the product of the first n primes.at n=7A001041
• Numbers N in A002809 such that there is rho > 0 such that for all A > 0, A008475(A)-A008475(N) >= rho*log(A/N).at n=8A002497
• Increasing values of A000793 (largest order of permutation of n elements).at n=40A002809
• Numbers k such that sigma(k)/phi(k) sets a new record.at n=34A018894
• Least common multiple of {C(0,0), C(2,1), ..., C(2n,n)}.at n=9A025540
• LCM of {C(0,0), C(1,0), ..., C(n, floor(n/2))}.at n=18A025552
• LCM of {C(0,0), C(1,0), ..., C(n, floor(n/2))}.at n=17A025552
• Least common multiple (or LCM) of first n positive triangular numbers (A000217).at n=15A025555
• Least common multiple (or LCM) of first n positive triangular numbers (A000217).at n=16A025555
• a(n) = LCM{1, C(n-1,1), C(n-2,2), ..., C(n-[ n/2 ],[ n/2 ])}.at n=17A025560
• a(n) = 21*(n+1)*binomial(n+6,9).at n=8A027821
• a(n) = (n-1)*(2*n-1)*(3*n-1)*(4*n-1).at n=23A033593
• Four numbers (a,b,c,d) with a<b<c<d that satisfy sigma(a) = sigma(b) = sigma(c) = sigma(d) = a+b+c+d are called an amicable quadruple. We order these quadruples according to the common value of sigma. The values of (a, b, c, d, sigma) are in (this sequence, A036472, A036473, A036474, A116148) respectively.at n=8A036471
• Four numbers (a,b,c,d) with a<b<c<d that satisfy sigma(a) = sigma(b) = sigma(c) = sigma(d) = a+b+c+d are called an amicable quadruple. We order these quadruples according to the common value of sigma. The values of (a, b, c, d, sigma) are in (this sequence, A036472, A036473, A036474, A116148) respectively.at n=7A036471
• a(n) = lcm(s(1),...,s(n)) where {s(n)} = A024619 and a(0) = 1.at n=16A056835
• a(n) = lcm(s(1),...,s(n)) where {s(n)} = A024619 and a(0) = 1.at n=15A056835
• a(n) = lcm(s(1),...,s(n)) where {s(n)} = A024619 and a(0) = 1.at n=17A056835
• Distinct values of sequence obtained when LCM is applied to initial segments of sequence A024619 union {1}.at n=9A056836
• Maximal order of element of alternating group A_{2n}.at n=36A057742
• Maximal order of element of alternating group A_{2n+1}.at n=36A057743