Greatest number in the n-th successive group of natural numbers containing exactly n prime powers.

Terms

a(0) =1a(1) =3a(2) =7a(3) =13a(4) =25a(5) =41a(6) =64a(7) =97a(8) =128a(9) =173a(10) =233a(11) =283a(12) =359a(13) =439a(14) =523a(15) =619a(16) =729a(17) =841a(18) =971a(19) =1093a(20) =1249a(21) =1423a(22) =1567a(23) =1733a(24) =1931a(25) =2113a(26) =2309a(27) =2531a(28) =2731a(29) =2969