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 A087915 #16 Aug 18 2025 05:49:12 %S A087915 0,2,4,8,10,14,20,22,28,32,34,38,40,50,52,62,64,68,74,80,82,88,94,98, %T A087915 104,110,112,118,124,130,134,140,152,154,164,172,178,182,188,190,208, %U A087915 214,218,220,230,232,238,242,244,248,250,260,272,280,284,292,298,302 %N A087915 Even numbers k such that 2*k+3 is a prime. %D A087915 M. Cerasoli, F. Eugeni and M. Protasi, Elementi di Matematica Discreta, Bologna 1988. %D A087915 Emanuele Munarini and Norma Zagaglia Salvi, Matematica Discreta, UTET, CittaStudiEdizioni, Milano 1997. %t A087915 Select[Range[0,350,2],PrimeQ[2#+3]&] (* _Harvey P. Dale_, Jan 12 2012 *) %Y A087915 A subset of A067076. %Y A087915 Cf. A002145. %Y A087915 a(n) = A089193(n)-5. %K A087915 easy,nonn %O A087915 1,2 %A A087915 _Giovanni Teofilatto_, Oct 18 2003 %E A087915 More terms from _Ray Chandler_, Oct 19 2003 %E A087915 Offset corrected by _Arkadiusz Wesolowski_, Aug 09 2011