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 A119455 #11 Apr 26 2025 11:20:58 %S A119455 1027,7217,7143,3433,3359,9549,9475,5765,5691,1981,1907,7107,7033, %T A119455 3323,3249,9439,9365,5655,5581,1871,1797,7987,7913,3213,3139,9329, %U A119455 9255,5545,5471,1761,1687,7877,7803,3103,3029,9219,9145,5435,5361,1651,1577,7767,7693,3983,3909,9109,9035,5325,5251,1541,1467,7657,7583,3873,3799,9989,9915,5215,5141,1431,1357,7547,7473,3763,3689,9879,9805,5105,5031,1321,1247,7437,7363,3653,3579,9769,9695,5985,5911,1211,1137,7327,7253,3543,3469,9659,9585,5875,5801,1101 %N A119455 Start with 1027 and repeatedly reverse the digits and add 16 to get the next term. %C A119455 Has period 90. A full period is shown. Starting with 1027 + 2*k for k = 1, ..., 18 gives other sequences with period 90. %H A119455 N. J. A. Sloane and others, <a href="/wiki/Sequences_of_RADD_type">Sequences of RADD type</a>, OEIS wiki. %H A119455 <a href="/index/Rec#order_90">Index entries for linear recurrences with constant coefficients</a>, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1). %t A119455 NestList[FromDigits[Reverse[IntegerDigits[#]]]+16&,1027,90] (* _Harvey P. Dale_, Mar 11 2015 *) %t A119455 NestList[IntegerReverse[#]+16&,1027,90] (* _Harvey P. Dale_, Apr 26 2025 *) %Y A119455 Cf. A118533, A119451, A117807. %K A119455 nonn,base %O A119455 1,1 %A A119455 _Klaus Brockhaus_, May 20 2006