Local minima of A053707 (first differences of A025475, powers of a prime but not prime).

Terms

a(0) =3a(1) =1a(2) =2a(3) =15a(4) =3a(5) =13a(6) =18a(7) =17a(8) =63a(9) =38a(10) =168a(11) =10a(12) =316a(13) =240a(14) =128a(15) =30a(16) =271a(17) =408a(18) =286a(19) =255a(20) =354a(21) =362a(22) =600a(23) =260a(24) =672a(25) =138a(26) =7a(27) =768a(28) =792a(29) =876