Smallest heptagonal number with n distinct prime factors.

A156238

Smallest heptagonal number with n distinct prime factors.

Terms

    a(0) =7a(1) =18a(2) =286a(3) =3010a(4) =32890a(5) =769230a(6) =3333330a(7) =159189030a(8) =16015883940a(9) =477463360374

External references