A061458 - OEIS

%I #8 Jul 02 2018 01:41:33

%S 0,1,8,343,1000,1331,8000,343000,1000000,1030301,1331000,1367631,

%T 8000000,343000000,1000000000,1003003001,1030301000,1033364331,

%U 1331000000,1334633301,1367631000,8000000000,10662526601,343000000000

%N Cubes whose digit reversal is also a cube.

%H Harry J. Smith, <a href="/A061458/b061458.txt">Table of n, a(n) for n = 0..63</a>

%e 1000 and 0001 (= 1) are both cubes.

%o (PARI) { n=-1; for (m=0, 220100, x=m^3; r=0; while (x>0, d=x-10*(x\10); x\=10; r=r*10 + d); if (r<2, t=0, f=factor(r)~; for(i=1, length(f), if (t=f[2, i]%3, break))); if (t==0, write("b061458.txt", n++, " ", m^3)) ) } \\ _Harry J. Smith_, Jul 23 2009

%K nonn,base

%O 0,3

%A _Amarnath Murthy_, May 03 2001

%E More terms from Larry Reeves (larryr(AT)acm.org), May 17 2001