4423680

Appears in sequences

• 19-almost primes (generalization of semiprimes).at n=16A069280
• Commuting elements: number of ordered pairs g, h in the group GL(2,Z_n) such that gh = hg.at n=14A070943
• Number of divisors of the n-th superior highly composite number.at n=29A098895
• Expansion of 1/(8*x^5+8*x^4-8*x^3-4*x^2+1).at n=19A123959
• Number of divisors of A138113(n).at n=29A140410
• Determinant of the symmetric n X n matrix M defined by M(i,j) = gcd(2i-1,2j-1) for 1 <= i,j <= n.at n=8A177066
• Sorted orders of automorphism groups of distinct solutions in the mix of 2 or 3 regular convex 4-polytopes.at n=12A199811
• Nonprime Heinz numbers of integer partitions whose product is equal to their sum.at n=34A301988
• Numbers where A349258 reaches a record value.at n=15A349259
• a(n) is the least number k such that A349258(k) = n.at n=19A349260
• a(n) is the first term of A351048 with n prime factors, counted with multiplicity, or 0 if there is no such term.at n=19A370935
• Triangle T(n,k) read by rows in which n-th row lists in increasing order all multiplicative partitions mu of n whose sum is also n (with factors >= 1), encoded as Product_{j in mu} prime(j); n>=1, 1<=k<=A001055(n).at n=52A377852