Increasing gaps between prime-powers.

Terms

a(0) =1a(1) =5a(2) =13a(3) =19a(4) =32a(5) =53a(6) =89a(7) =139a(8) =199a(9) =293a(10) =887a(11) =1129a(12) =1331a(13) =5591a(14) =8467a(15) =9551a(16) =15683a(17) =19609a(18) =31397a(19) =155921a(20) =360653a(21) =370261a(22) =492113a(23) =1349533a(24) =1357201a(25) =2010733a(26) =4652353a(27) =17051707a(28) =20831323a(29) =47326693