This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A239885 #16 Jan 04 2023 10:33:54
%S A239885 1,3,10,28,88,208,544,1216,2944,7424,15872,37888,83968,176128,385024,
%T A239885 868352,1933312,3997696,8781824,18612224,38273024,82837504,174063616,
%U A239885 373293056,813694976,1694498816,3456106496,7180648448,14629732352,30333206528
%N A239885 a(n) = 2^(n-2) * prime(n).
%H A239885 G. C. Greubel, <a href="/A239885/b239885.txt">Table of n, a(n) for n = 1..1000</a>
%F A239885 a(n) = A110295(n)/2.
%t A239885 Table[Prime[n]2^(n-2),{n,30}] (* _Harvey P. Dale_, Aug 19 2019 *)
%o A239885 (PARI) vector(50, n, prime(n)*2^(n-2)) \\ _Colin Barker_, Mar 29 2014
%o A239885 (Magma) [2^(n-2)*NthPrime(n): n in [1..50]]; // _G. C. Greubel_, Jan 04 2023
%o A239885 (SageMath) [2^(n-2)*nth_prime(n) for n in range(1,51)] # _G. C. Greubel_, Jan 04 2023
%Y A239885 Cf. A000040, A000079, A110295.
%K A239885 nonn,easy
%O A239885 1,2
%A A239885 _Gerasimov Sergey_, Mar 29 2014