Numbers k such that k+1, 2k+1, 3k+1, 4k+1, 5k+1 are five primes.

Terms

a(0) =10830a(1) =25410a(2) =26040a(3) =88740a(4) =165900a(5) =196560a(6) =211050a(7) =224400a(8) =230280a(9) =247710a(10) =268500a(11) =268920a(12) =375480a(13) =377490a(14) =420330a(15) =451410a(16) =494340a(17) =512820a(18) =592620a(19) =604170a(20) =735750a(21) =751290a(22) =765780a(23) =799170a(24) =808080a(25) =952680a(26) =975660a(27) =1053690a(28) =1064190a(29) =1132860