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A124069
Fixed points for operation of repeatedly replacing a number with the sum of the eighth power of its digits.
8
0, 1, 24678050, 24678051, 88593477
OFFSET
1,3
COMMENTS
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
FORMULA
a(n) = A210840(a(n)). - M. F. Hasler, Apr 12 2015
EXAMPLE
24678050 = 2^8 + 4^8 + 6^8 + 7^8 + 8^8 + 0^8 + 5^8 + 0^8.
PROG
(PARI) isok(n) = my(d = digits(n)); sum(k=1, #d, d[k]^8) == n; \\ Michel Marcus, Feb 21 2015
(PARI) for(n=0, 413979400, A210840(n)==n&&print1(n", ")) \\ M. F. Hasler, Apr 12 2015
KEYWORD
base,fini,full,nonn
AUTHOR
STATUS
approved