1323000

Appears in sequences

• Smallest order for which there are n nonisomorphic finite Abelian groups, or 0 if no such order exists.at n=53A046056
• LCM of terms in period of continued fraction expansion of square root of A051451(n), i.e., sqrt(lcm(1..x)) where x is a prime power from A000961.at n=11A077639
• OU-Sigma multiperfect numbers.at n=12A091321
• Smallest order for which there are n nonisomorphic finite Hamiltonian groups, or 0 if no such order exists.at n=18A104453
• a(n) = Fibonacci(n)*n^2*(binomial(2*n, n))^2/(n+1).at n=5A119695
• A partition product of Stirling_2 type [parameter k = -3] with biggest-part statistic (triangle read by rows).at n=32A157399
• Numbers with at least three 3s in their prime signature.at n=24A176359
• Prime encoded sequence of generic integer partitions of n in the antilexicographic order of the partitions.at n=18A182911
• A permutation of A025487: Sequence of least representatives of distinct prime signatures obtained from the run lengths present in the binary expansion of n.at n=44A322827
• Primorial inflation of Doudna-tree: a(0) = 1, a(1) = 2; for n > 1, if n is even, a(n) = A283980(a(n/2)), and if n is odd, then a(n) = 2*a((n-1)/2).at n=52A329886
• a(0) = 1, a(1) = 2; for n > 1, if n is even, then a(n) = 2*a(n/2), and if n is odd, a(n) = A283980(a((n-1)/2)).at n=43A329887
• Numbers k such that k and the next two numbers after k with the same prime signature as k also have the same set of distinct prime divisors as k.at n=15A340303
• a(n) is the smallest number with exactly n divisors that are Achilles numbers (A052486).at n=31A358514
• Numbers that have exactly three exponents in their prime factorization that are equal to 3.at n=24A386802