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 A217076 #17 Jul 08 2025 14:34:46 %S A217076 61,77,94,97,99,113,126,130,134,147,161,172,187,202,208,246,261,273, %T A217076 285,302,320,432,444,503,523,525,563,666,680,709,740,757,787,902,962, %U A217076 964,969,1013,1109,1165,1186,1219,1351,1528,1587,1660,1698,1710,1754,1811,1972 %N A217076 Numbers k such that (k^37-1)/(k-1) is prime. %H A217076 Vincenzo Librandi, <a href="/A217076/b217076.txt">Table of n, a(n) for n = 1..1000</a> %t A217076 Select[Range[2, 2000], PrimeQ[(#^37 - 1)/(# - 1)] &] (* _T. D. Noe_, Sep 26 2012 *) %o A217076 (Magma) [n: n in [2..2000] |IsPrime((n^37 - 1) div (n - 1))]; // _Vincenzo Librandi_, Sep 28 2012 %o A217076 (PARI) is(n)=isprime((n^37-1)/(n-1)) \\ _Charles R Greathouse IV_, Feb 17 2017 %Y A217076 Cf. A002384, A049409, A100330, A162862, A217070-A217089. %K A217076 nonn,easy %O A217076 1,1 %A A217076 _Tim Johannes Ohrtmann_, Sep 26 2012 %E A217076 More terms from _T. D. Noe_, Sep 26 2012