480720240

Appears in sequences

• a(n) = 4*(n+1)*binomial(n+2,8).at n=21A027781
• a(n) = lcm{prime(i)-1, i=1..n}.at n=17A058254
• a(n) = lcm{prime(i)-1, i=1..n}.at n=18A058254
• a(n) = lcm{prime(i)-1, i=1..n}.at n=19A058254
• a(n) = lcm{prime(i)-1, i=1..n}.at n=20A058254
• a(n) = lcm{prime(i)-1, i=1..n}.at n=21A058254
• a(n) = lcm{prime(i)-1, i=1..n}.at n=22A058254
• Distinct values of lcm_{i=1..n} (p(i)-1), where p() are the primes.at n=11A058255
• Least k > 0 such that t^k = 1 mod (prime(n) - t) for 0 < t < prime(n).at n=17A066220
• Least k > 0 such that t^k = 1 mod (prime(n) - t) for 0 < t < prime(n).at n=18A066220
• Least k > 0 such that t^k = 1 mod (prime(n) - t) for 0 < t < prime(n).at n=19A066220
• Least k > 0 such that t^k = 1 mod (prime(n) - t) for 0 < t < prime(n).at n=20A066220
• Least k > 0 such that t^k = 1 mod (prime(n) - t) for 0 < t < prime(n).at n=21A066220
• Period of reciprocal of the primorials.at n=15A092281
• Period of reciprocal of the primorials.at n=16A092281
• Period of reciprocal of the primorials.at n=17A092281
• Period of reciprocal of the primorials.at n=18A092281
• Period of reciprocal of the primorials.at n=19A092281
• Period of reciprocal of the primorials.at n=20A092281
• a(n) = denominator(Sum_{k=1..n} 1/(prime(k)-1)).at n=20A128646