2565568005

Appears in sequences

• a(n) = product[k=1..n] P(k), where P(k) is the largest prime <= 3*k. a(n) = product[k=1..n] A118749(k).at n=8A118750
• Numbers with exactly 8 distinct odd prime divisors {3,5,7,11,13,17,19,23}.at n=11A147581
• a(0)=1, and for n >= 1, a(n) = p_n * A002110(n) / 2, where p_n is the n-th prime.at n=9A243054
• Self-inverse permutation of nonnegative integers, A075158-conjugate of the inverse of gray code: a(n) = 1 + A075157(A006068(A075158(n-1))).at n=58A245452