15825810

Appears in sequences

• Triangle read by rows in which row n contains first n numbers with exactly n distinct prime factors.at n=32A048692
• Products of 8 distinct primes (squarefree 8-almost primes).at n=4A123322
• Irregular triangle read by rows: T(m, k) is the list of squarefree numbers A002110(m) < t < 2*A002110(m) such that A001221(t) = m.at n=25A288813
• Numbers k such that omega(k) = 8.at n=4A348072
• Table read by row, where T(n,k), n>0 and k>0, represents the smallest n-digit number that is the product of k distinct primes and is sandwiched between semiprime numbers, or -1 if no such number exists.at n=39A379167