1272810

Appears in sequences

• Coordination sequence for A_6 lattice.at n=11A008387
• Consider 2n tennis players; a(n) is the number of matches needed to let every possible pair play each other.at n=27A062346
• Duplicate of A076978.at n=15A074168
• Product of the distinct primes dividing the product of composite numbers between consecutive primes.at n=15A076978
• Product of all distinct prime factors of all composite numbers between n-th prime and next prime.at n=14A079615
• Products of 7 distinct primes (squarefree 7-almost primes).at n=15A123321
• Smallest hexagonal number with n distinct prime factors.at n=5A156237
• Number of integer sequences of length n+1 with sum zero and sum of absolute values 22.at n=5A157060
• Numbers that are divisible by exactly 7 distinct primes.at n=17A176655