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 A276132 #3 Aug 24 2016 08:33:35 %S A276132 2,3,5,7,11,13,17,31,37,71,73,79,97,131,151,157,179,337,353,359,373, %T A276132 727,733,739,751,757,929,937,953,971,1733,1979,3319,3371,3373,3719, %U A276132 3733,7177,7717,9133,9173,9791 %N A276132 Terms of A077390 with reverse in A077390. %C A276132 A subsequence of the reversible primes (A007500). %C A276132 Inspired by Aug. 2016 SeqFan discussion about arrays of primes. %C A276132 Questions: 1) What is the largest N X N square of decimal digits whose rows, columns and main diagonals are (non-palindromic) terms of this sequence? %C A276132 The digits of each remaining smaller square formed by removing the outermost layer of digits of a given such square also form terms of this sequence. 2) What is the maximum number of distinct terms of this sequence that can appear in the rows, columns and diagonals of a single N X N square and of all its nested (N-2) X (N-2), (N-4) X (N-4), ..., 2 X 2 or 1 X 1 squares? %C A276132 3) What is the maximum number of such consecutively nested squares comprised in total of only distinct primes? %e A276132 9791 is a term because 9791, 79, 1979 and 97 are all prime numbers. %Y A276132 Cf. A077390, A007500. %K A276132 nonn,base,fini %O A276132 1,1 %A A276132 _Rick L. Shepherd_, Aug 21 2016