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 A093765 #13 Jun 05 2025 06:33:44
%S A093765 1,2,3,8,9,15,26,30,69,212,318,909,1224,1946,2192,2234,2978,3344,4976,
%T A093765 7947,8079,23334,23624,55401,89712
%N A093765 Numbers k such that 6^k+5^(k-1) is prime.
%C A093765 a(26) > 10^5. - _Robert Price_, Feb 13 2016
%e A093765 15 is a member since 615+515 = 476288500201 which is a prime number.
%t A093765 Do[ If[ PrimeQ[6^n + 5^(n - 1)], Print[n]], {n, 4000}]
%o A093765 (PARI) is(n)=isprime(6^n+5^(n-1)) \\ _Charles R Greathouse IV_, Feb 17 2017
%Y A093765 Cf. A093713, A082103, A093717, A093793, A096185, A093794, A093795, A096186.
%K A093765 nonn,hard,more
%O A093765 1,2
%A A093765 Herman H. Rosenfeld (herm3(AT)pacbell.net), May 17 2004
%E A093765 More terms from _Robert G. Wilson v_, Jun 18 2004
%E A093765 a(19)-a(25) from _Robert Price_, Feb 13 2016