Beginnings of maximal chains of primes with five members (four links).

Terms

a(0) =61a(1) =1069a(2) =2293a(3) =2879a(4) =5441a(5) =20347a(6) =145823a(7) =183949a(8) =187171a(9) =207629a(10) =219649a(11) =278087a(12) =412171a(13) =420467a(14) =421273a(15) =507503a(16) =536479a(17) =696937a(18) =698311a(19) =774929a(20) =792283a(21) =1028081a(22) =1310137a(23) =1432927a(24) =1470757a(25) =1726211a(26) =1803881a(27) =1861817a(28) =1904477a(29) =1928561