1003917915

Appears in sequences

• Denominators of coefficients of expansion of arctan(x)^2 = x^2-2/3*x^4+23/45*x^6-44/105*x^8+563/1575*x^10-3254/10395*x^12+ ...at n=12A071968
• Oddly superabundant numbers: odd n with sigma(n)/n > sigma(k)/k for all odd k < n.at n=30A119239
• Numbers with exactly 8 distinct odd prime divisors {3,5,7,11,13,17,19,23}.at n=4A147581
• Denominators of Integral_{x=0..Pi/2} sin(2*n*x)*log(cosec(x)) dx.at n=24A225123
• a(n) gives the denominators for A250031(n) as well as for A250032(n).at n=26A250033
• 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=7A254409
• Denominator of Sum_{k=0..n} (2^k * (k!)^2)/(2k + 1)!.at n=13A277585
• Numbers that are not practical (A237287) and have more divisors than any smaller number that is not practical.at n=34A335029
• Odd numbers k for which A003973(k) >= 2*A003961(k).at n=1A337385
• Positions of records in A188169.at n=32A343134
• Positions of records in A188170.at n=31A343135
• Positions of records in A188171.at n=29A343136
• Positions of records in A188172.at n=29A343137
• Smallest number with 2^n odd divisors.at n=9A360438