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 A272623 #12 May 04 2016 19:04:52 %S A272623 0,1,2,3,5,8,55,17711,63245986,165580141,498454011879264, %T A272623 14472334024676221,1100087778366101931,298611126818977066918552, %U A272623 781774079430987230203437,14028366653498915298923761,22698374052006863956975682,36726740705505779255899443,59425114757512643212875125 %N A272623 Fibonacci numbers whose first digit is equal to its last digit. %H A272623 Chai Wah Wu, <a href="/A272623/b272623.txt">Table of n, a(n) for n = 1..513</a> %t A272623 DeleteDuplicates@ Select[Fibonacci@ Range[0, 125], First@ # == Last@ # &@ IntegerDigits@ # &] (* _Michael De Vlieger_, May 04 2016 *) %o A272623 (PARI) isok(n) = my(d = digits(n)); d[1] == d[#d]; %o A272623 lista(nn) = print1(0, ", "); for (n=2, nn, if (isok(f=fibonacci(n)), print1(f, ", "))); \\ _Michel Marcus_, May 04 2016 %Y A272623 Cf. A000045, A227858. %K A272623 nonn,base %O A272623 1,3 %A A272623 _Chai Wah Wu_, May 03 2016