Values of k for which 7m+1, 8m+1 and 11m+1 are prime, with m = 1848k + 942.

Terms

a(0) =13a(1) =123a(2) =218a(3) =223a(4) =278a(5) =411a(6) =513a(7) =551a(8) =588a(9) =733a(10) =743a(11) =796a(12) =856a(13) =928a(14) =1168a(15) =1226a(16) =1263a(17) =1401a(18) =1533a(19) =1976a(20) =1981a(21) =2013a(22) =2096a(23) =2138a(24) =2241a(25) =2376a(26) =2556a(27) =2676a(28) =2703a(29) =3626