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 A276196 #10 May 11 2025 23:48:06
%S A276196 2,29,271,2719,27191,271829,2718281,27182839,271828199,2718281831,
%T A276196 27182818309,271828182863,2718281828489,27182818284617,
%U A276196 271828182845909,2718281828459051,27182818284590483,271828182845904533,2718281828459045269,27182818284590452387,271828182845904523609
%N A276196 Smallest prime >= decimal expansion of e truncated to n places (A011543).
%H A276196 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/NextPrime.html">Next Prime</a>
%H A276196 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/e.html">e</a>
%H A276196 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/e-Prime.html">e-Prime</a>
%H A276196 <a href="/index/Con#constant_primes">Index entries related to "constant primes"</a>
%F A276196 a(n) = A007918(A011543(n)).
%F A276196 a(n) = A000040(A000720(A011543(n)-1)+1).
%F A276196 a(A064118(n)-1) = A007512(n).
%e A276196 a(5) = 271829, since this is the smallest prime >= floor(e*10^5) = 271828.
%e A276196 e = 2.71828182845904523536028747135266249775724...
%t A276196 Table[NextPrime[Floor[E 10^n] - 1], {n, 0, 20}]
%Y A276196 Cf. A000040, A000720, A001113, A007512, A007918, A011543, A064118.
%K A276196 nonn,base
%O A276196 0,1
%A A276196 _Ilya Gutkovskiy_, Aug 24 2016