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 A063433 #21 Apr 25 2025 15:07:33 %S A063433 10577,88078,175166,836737,1574375,7309126,13528163,49710694,99312488, %T A063433 187733887,976071668,1842242347,9274664828,17559329557,93151725128, %U A063433 175304440267,937348843838,1775697687577,9533565653348,17967131306707 %N A063433 'Reverse and Add!' trajectory of 10577. %H A063433 Harry J. Smith, <a href="/A063433/b063433.txt">Table of n, a(n) for n=0,...,200</a> %H A063433 <a href="/index/Res#RAA">Index entries for sequences related to Reverse and Add!</a> %e A063433 a(1) = 10577 + 77501 = 88078. %t A063433 NestList[#+FromDigits[Reverse[IntegerDigits[#]]]&,10577, 20] (* _Harvey P. Dale_, Apr 03 2011 *) %o A063433 (ARIBAS) m := 10577; stop := 20; c := 0; rev := int_reverse(m); while m <> rev and c < stop do inc(c); write(m," "); m := m + rev; rev := int_reverse(m); end; %o A063433 (PARI) Rev(x)= { local(d,r); r=0; while (x>0, d=x-10*(x\10); x\=10; r=r*10 + d); return(r) } %o A063433 { for (n=0, 200, if (n, a+=Rev(a), a=10577); write("b063433.txt", n, " ", a) ) } \\ _Harry J. Smith_, Aug 21 2009 %o A063433 (Haskell) %o A063433 a063433 n = a063433_list !! n %o A063433 a063433_list = iterate a056964 10577 -- _Reinhard Zumkeller_, Sep 22 2011 %Y A063433 A033865, A023108, A006960, A063434. %Y A063433 Cf. A056964, A004086. %K A063433 base,nonn %O A063433 0,1 %A A063433 _Klaus Brockhaus_, Jul 20 2001