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 A100486 #30 Apr 05 2023 09:47:20
%S A100486 2,4,7,9,14,16,21,23,27,33,36,42,47,49,53,59,66,68,75,79,81,87,92,98,
%T A100486 106,110,112,116,119,123,138,142,148,150,160,162,169,175,179,185,192,
%U A100486 194,205,207,211,213,226,238,242,244,248,254,257,267,273,279,285,287
%N A100486 a(n) = pi(n) + prime(n).
%H A100486 Indranil Ghosh, <a href="/A100486/b100486.txt">Table of n, a(n) for n = 1..10410</a>
%F A100486 a(n) = A000720(n) + A000040(n). - _Wesley Ivan Hurt_, Jan 28 2014
%e A100486 a(21) = pi(21) + prime(21) = 8 + 73 = 81.
%p A100486 with(numtheory); A100486:=n->pi(n) + ithprime(n); seq(A100486(n), n=1..60); # _Wesley Ivan Hurt_, Jan 28 2014
%t A100486 Table[PrimePi[n] + Prime[n], {n, 60}]
%o A100486 (PARI) a(n) = primepi(n) + prime(n); \\ _Michel Marcus_, Feb 24 2023
%o A100486 (Magma) [#PrimesUpTo(n) + NthPrime(n): n in [1..80]]; // _G. C. Greubel_, Apr 04 2023
%o A100486 (SageMath) [prime_pi(n) + nth_prime(n) for n in range(1,81)] # _G. C. Greubel_, Apr 04 2023
%Y A100486 Cf. A000040, A000720, A065042, A100917.
%K A100486 easy,nonn
%O A100486 1,1
%A A100486 _Jonathan Vos Post_, Nov 22 2004