23679

Appears in sequences

• Discriminants of quintic fields with 2 complex conjugates (negated).at n=46A023684
• McKay-Thompson series of class 27A for the Monster group.at n=34A058599
• a(n) is the least positive integer such that nextprime(a(n)^n) - prevprime(a(n)^n) = 4.at n=38A090125
• (Number of permutations of {1,2,...,n} for which sums of four consecutive numbers (with wraparound) are all distinct)/2n.at n=5A206478
• Number of partitions of n containing at least one part m-10 if m is the largest part.at n=35A212550
• Expansion of a(q) / b(q) in powers of q where a(), b() are cubic AGM theta functions.at n=11A215690
• Numbers k such that 5*10^k - 81 is prime.at n=22A281512
• Numbers k such that 5*10^k + 41 is prime.at n=20A291605
• Odd numbers k such that A173557(k) = A173557(sigma(k)), where A173557(n) is multiplicative with a(p^e) = p-1 and sigma is the sum of divisors function.at n=25A387159