Prime powers with special exponents: q^(p-1) where p > 2 and q are prime numbers.

Terms

a(0) =4a(1) =9a(2) =16a(3) =25a(4) =49a(5) =64a(6) =81a(7) =121a(8) =169a(9) =289a(10) =361a(11) =529a(12) =625a(13) =729a(14) =841a(15) =961a(16) =1024a(17) =1369a(18) =1681a(19) =1849a(20) =2209a(21) =2401a(22) =2809a(23) =3481a(24) =3721a(25) =4096a(26) =4489a(27) =5041a(28) =5329a(29) =6241