357642

Appears in sequences

• a(n) is the first term in the first chain of at least n consecutive numbers each having exactly four distinct prime factors.at n=4A087977
• Initial term of first run of exactly n consecutive numbers with 4 distinct prime factors.at n=4A185042
• Square array T(n, k), n > 1 and k >= 1, read by upward antidiagonals, give the smallest number that starts a sequence of exactly k consecutive numbers, each having exactly n distinct prime factors (counted without multiplicity), or -1 if no such number exists.at n=25A375287