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 A161453 #6 Jan 25 2018 10:10:18 %S A161453 13,28,47,62,73,88,107,122,133,148,167,182,193,208,227,242,268,285, %T A161453 302,319,328,345,362,379,388,405,422,439,448,465,482,499,527,542,557, %U A161453 572,587,602,617,632,647,662,677,692,707,722,737,752,782,799,812,829,842 %N A161453 Numbers n such that A160700(n) = 13. %H A161453 Charles R Greathouse IV, <a href="/A161453/b161453.txt">Table of n, a(n) for n = 1..10000</a> %F A161453 16n - 16 <= a(n) <= 16n - 1. - _Charles R Greathouse IV_, Jan 25 2018 %o A161453 (PARI) A160700(n)=my(t=n%16); while(n>15, n>>=4; t=bitxor(t, n%16)); t %o A161453 a(n)=for(k=16*n-16, 16*n-1, if(a(k)==13, return(k))) \\ _Charles R Greathouse IV_, Jan 25 2018 %Y A161453 Cf. A161440, A161441, A161442, A161443, A161444, A161445, A161446, A161447, A161448, A161449, A161450, A161451, A161452, A161454, A161455. %K A161453 nonn,easy %O A161453 1,1 %A A161453 _Reinhard Zumkeller_, Jun 10 2009