2297295

Appears in sequences

• a(n) = (2*n+5)!!/5!!, related to A001147 (odd double factorials).at n=6A051579
• Highly composite odd numbers: odd numbers where d(n) increases to a record.at n=23A053624
• Boundaries of primorial intervals [1,3]; [3,9],[9,15]; [15,45], etc.at n=29A065917
• Difference of consecutive primorial numbers divided by 4.at n=6A078865
• Product of terms in row n of A083110.at n=7A083112
• An invertible triangle of ratios of double factorials.at n=48A112292
• Oddly superabundant numbers: odd n with sigma(n)/n > sigma(k)/k for all odd k < n.at n=20A119239
• Terms in A038547 where prime signature differs from that of corresponding term in A005179.at n=8A122814
• Numbers with exactly 6 distinct odd prime divisors {3,5,7,11,13,17}.at n=4A147579
• Smallest number having exactly n divisors of the form 8*k + 7.at n=32A188226
• a(n+2) = (2*n+1)^2*a(n+1) + (2*n+1)*(2*n-1)*a(n) with a(1)=1 and a(2)=2.at n=5A218768
• a(n) = (2*n+1)!! / ((floor((n-1)/3)*2+1))!!at n=8A220747
• a(n) gives the denominators for A250031(n) as well as for A250032(n).at n=17A250033
• a(n) is the least x such that tau(x) divides (x-1)^n but not (x-1)^(n-1), for n >= 2.at n=5A254409
• Denominator of the volume of d dimensional symmetric convex cuboid with constraints |x1 + x2 + ... xd| <= 1 and |x1|, |x2|, ..., |xd| <= 1.at n=16A266913
• Numbers with a record number of divisors whose binary expansion is palindromic.at n=22A330815
• a(n) is the least integer that can be expressed as the difference of two hexagonal numbers in exactly n ways.at n=29A334035
• Numbers that are not practical (A237287) and have more divisors than any smaller number that is not practical.at n=22A335029
• Smallest number having exactly n divisors of the form 8*k + 1.at n=31A343104
• Smallest number having exactly n divisors of the form 8*k + 3.at n=32A343105