a(n) is the smallest m for which binomial(m, 6) has exactly n distinct prime factors.

Terms

a(0) =6a(1) =7a(2) =8a(3) =9a(4) =10a(5) =18a(6) =26a(7) =40a(8) =77a(9) =120a(10) =210a(11) =477a(12) =715a(13) =2227a(14) =3290a(15) =9065a(16) =17020a(17) =49915a(18) =139195a(19) =240465a(20) =721929a(21) =1124840a(22) =4455445a(23) =16319578a(24) =26683220a(25) =105655905a(26) =134879176a(27) =677868170a(28) =3290262264