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 A264824 #10 Feb 16 2025 08:33:27 %S A264824 103,613,1123,1327,3571,5101,6427,10711,16831,19993,22543,30091,34273, %T A264824 39883,59263,72727,77521,79153,92821,98227,105673,115363,129643, %U A264824 146983,156061,177481,197677,238477,241333,264793,311713,324871,341701,428401,487561,503983,524893 %N A264824 Centered 17-gonal (or heptadecagonal) primes. %C A264824 Primes of the form (17*k^2 - 17*k + 2)/2. %H A264824 OEIS Wiki, <a href="https://oeis.org/wiki/Figurate_numbers">Figurate numbers</a> %H A264824 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/CenteredPolygonalNumber.html">Centered Polygonal Number</a> %H A264824 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PrimeNumber.html">Prime Number</a> %o A264824 (PARI) for(n=1, 1e3, if(isprime(k=(17*n^2-17*n+2)/2), print1(k,", "))) \\ _Altug Alkan_, Nov 26 2015 %Y A264824 Cf. A069130, A000040. %K A264824 nonn %O A264824 1,1 %A A264824 _Ilya Gutkovskiy_, Nov 26 2015