Lonely (or isolated) primes: least prime of distance n from nearest prime (n = 1 or even).

Terms

a(0) =2a(1) =5a(2) =23a(3) =53a(4) =409a(5) =293a(6) =211a(7) =1847a(8) =3137a(9) =2179a(10) =3967a(11) =23719a(12) =16033a(13) =40387a(14) =44417a(15) =24281a(16) =158699a(17) =220973a(18) =172933a(19) =321509a(20) =38501a(21) =58831a(22) =203713a(23) =268343a(24) =206699a(25) =829399a(26) =824339a(27) =413353a(28) =2280767a(29) =2305549