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 A101167 #6 Feb 16 2025 08:32:55 %S A101167 13,41,61,113,181,313,421,613,761,1013,1201,1289,1301,1741,1861,2113, %T A101167 2381,2521,3121,3613,4513,5101,5641,7321,8581,9661,9941,10513,11969, %U A101167 12641,13613,14281,14621,15313,16381,19013,19801,20201,21013,21841 %N A101167 Nontrivial Delannoy numbers that are primes. %C A101167 Let D and T be defined as in A008288: then D(n,1)=D(1,n)=T(n,1)=T(n,n-1)=2*n+1, therefore all odd primes are Delannoy numbers; the sequence contains only primes of form D(n,k) with n>1 and k>1, resp. T(n,k) with 2<=k<=n-2. %C A101167 apart from the first term A092830 is a subsequence. %H A101167 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/DelannoyNumber.html">Delannoy Number</a> %e A101167 D(2,7)=T(9,2)=113=A000040(30), therefore 113 is a term. %K A101167 nonn %O A101167 1,1 %A A101167 _Reinhard Zumkeller_, Dec 03 2004