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Terms 2*p (p prime) in A090252, divided by 2, in order of appearance.
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%I #21 Jul 15 2022 11:28:45

%S 2,13,103,239,499,1567,3257,6971,14447,30259,63317,130699

%N Terms 2*p (p prime) in A090252, divided by 2, in order of appearance.

%C By definition, 2*a(n) is a term in A354255.

%C Conjecture: the indices of the terms 2*p in A090252 are terms in A083329.

%e The indices in A090252 of the initial terms 2*p, the terms 2*p themselves, and the primes p are [5, 4, 2], [47, 26, 13], [767, 206, 103], [3071, 478, 239].

%Y Cf. A083329, A090252, A354150, A354151, A354255.

%K nonn,more

%O 1,1

%A _N. J. A. Sloane_, May 30 2022

%E a(6)-a(8) from _Michael S. Branicky_, Jun 04 2022 using A354255

%E a(9)-a(11) from _Hugo van der Sanden_, Jun 14 2022

%E a(12) from _Jinyuan Wang_, Jul 15 2022