Twin primes p and r (p < r) such that p-1, p+1 and r+1 are not cubefree.

Terms

a(0) =69497a(1) =69499a(2) =416501a(3) =416503a(4) =474497a(5) =474499a(6) =632501a(7) =632503a(8) =960497a(9) =960499a(10) =1068497a(11) =1068499a(12) =1226501a(13) =1226503a(14) =1402871a(15) =1402873a(16) =1464101a(17) =1464103a(18) =1635497a(19) =1635499a(20) =1716497a(21) =1716499a(22) =1919429a(23) =1919431a(24) =1986497a(25) =1986499