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A055566
Sum of digits of n^5.
10
0, 1, 5, 9, 7, 11, 27, 22, 26, 27, 1, 14, 27, 25, 29, 36, 31, 35, 45, 37, 5, 18, 25, 29, 36, 40, 35, 36, 28, 23, 9, 34, 29, 36, 31, 35, 36, 46, 41, 36, 7, 29, 27, 31, 35, 36, 46, 32, 45, 43, 11, 27, 22, 44, 36, 37, 41, 36, 52, 47, 27, 40, 35, 45, 37, 32, 36, 25, 47, 36, 22, 35
OFFSET
0,3
LINKS
EXAMPLE
a(2) = 5 because 2^4 = 32 and 3+2 = 5.
Trajectories under the map x->a(x):
1 ->1 ->1 ->1 ->1 ->1 ->1 ->1 ->1 ->..
2 ->5 ->11 ->14 ->29 ->23 ->29 ->23 ->29 ->..
3 ->9 ->27 ->36 ->36 ->36 ->36 ->36 ->36 ->..
4 ->7 ->22 ->25 ->40 ->7 ->22 ->25 ->40 ->..
5 ->11 ->14 ->29 ->23 ->29 ->23 ->29 ->23 ->..
6 ->27 ->36 ->36 ->36 ->36 ->36 ->36 ->36 ->..
7 ->22 ->25 ->40 ->7 ->22 ->25 ->40 ->7 ->..
MAPLE
read("transforms") :
A055566 := proc(n)
digsum(n^5) ;
end proc: # R. J. Mathar, Jul 08 2012
MATHEMATICA
Table[Total[IntegerDigits[n^5]], {n, 0, 80}] (* Harvey P. Dale, Feb 12 2023 *)
PROG
(PARI) a(n) = sumdigits(n^5); \\ Seiichi Manyama, Nov 16 2021
KEYWORD
base,nonn
AUTHOR
Henry Bottomley, May 26 2000
STATUS
approved