# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a124069 Showing 1-1 of 1 %I A124069 #21 Mar 31 2017 20:58:51 %S A124069 0,1,24678050,24678051,88593477 %N A124069 Fixed points for operation of repeatedly replacing a number with the sum of the eighth power of its digits. %C A124069 This is row n=8 of A252648. For a d-digit number n >= 10^(d-1), the sum of 8th powers of its digits is <= 9^8*d, therefore n <= 413979400. - _M. F. Hasler_, Apr 12 2015 %F A124069 a(n) = A210840(a(n)). - _M. F. Hasler_, Apr 12 2015 %e A124069 24678050 = 2^8 + 4^8 + 6^8 + 7^8 + 8^8 + 0^8 + 5^8 + 0^8. %o A124069 (PARI) isok(n) = my(d = digits(n)); sum(k=1, #d, d[k]^8) == n; \\ _Michel Marcus_, Feb 21 2015 %o A124069 (PARI) for(n=0,413979400,A210840(n)==n&&print1(n",")) \\ _M. F. Hasler_, Apr 12 2015 %Y A124069 Cf. A046197, A052455, A052464, A124068, A226970, A003321, A210840, A252648. %K A124069 base,fini,full,nonn %O A124069 1,3 %A A124069 _Sébastien Dumortier_, Nov 05 2006 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE