Number of integers k>=n such that binomial(k,n) has fewer than n distinct prime factors.

Terms

a(0) =1a(1) =2a(2) =6a(3) =9a(4) =20a(5) =26a(6) =43a(7) =63a(8) =75a(9) =91a(10) =130a(11) =151a(12) =185a(13) =243a(14) =279a(15) =307a(16) =383a(17) =392a(18) =488a(19) =511a(20) =595a(21) =716a(22) =904a(23) =917a(24) =1053a(25) =1213a(26) =1282a(27) =1262a(28) =1403a(29) =1632