Least k such that k*prime(k) > 10^n.

Terms

a(0) =1a(1) =3a(2) =7a(3) =17a(4) =48a(5) =134a(6) =382a(7) =1115a(8) =3287a(9) =9786a(10) =29296a(11) =88181a(12) =266694a(13) =809599a(14) =2465574a(15) =7528976a(16) =23045352a(17) =70684657a(18) =217196605a(19) =668461874a(20) =2060257099a(21) =6358076827a(22) =19644205359a(23) =60757729194a(24) =188099056251a(25) =582846849914