

A066588


The sum of the digits of n^n.


5



1, 4, 9, 13, 11, 27, 25, 37, 45, 1, 41, 54, 58, 52, 99, 88, 98, 108, 127, 31, 117, 148, 146, 153, 151, 154, 189, 163, 167, 63, 184, 205, 207, 214, 260, 270, 271, 265, 306, 112, 308, 315, 313, 325, 306, 352, 374, 333, 355, 151
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OFFSET

1,2


LINKS

Harry J. Smith, Table of n, a(n) for n=1,...,1000


EXAMPLE

a(7) = 25 because 7^7 = 823543 and 8 + 2 + 3 + 5 + 4 + 3 = 25.


MAPLE

P:=proc(n) local i, k, w; for i from 1 by 1 to n do w:=0; k:=i^i; while k>0 do w:=w+k(trunc(k/10)*10); k:=trunc(k/10); od; print(w); od; end: P(100);  Paolo P. Lava, May 15 2007


PROG

(PARI) SumD(x)= { local(s=0); while (x>9, s+=x%10; x\=10); return(s + x) } { for (n=1, 1000, write("b066588.txt", n, " ", SumD(n^n)) ) } [From Harry J. Smith, Mar 08 2010]


CROSSREFS

Cf. A000312, A004152.
Sequence in context: A197615 A125848 A225752 * A135740 A247881 A010412
Adjacent sequences: A066585 A066586 A066587 * A066589 A066590 A066591


KEYWORD

base,nonn


AUTHOR

Robert A. Stump (bee_ess107(AT)yahoo.com), Jan 07 2002


EXTENSIONS

More terms from Paolo P. Lava, May 15 2007


STATUS

approved



