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A123253 Sum of 7th powers of digits of n. 2
0, 1, 128, 2187, 16384, 78125, 279936, 823543, 2097152, 4782969, 1, 2, 129, 2188, 16385, 78126, 279937, 823544, 2097153, 4782970, 128, 129, 256, 2315, 16512, 78253, 280064, 823671, 2097280, 4783097, 2187, 2188, 2315, 4374, 18571, 80312, 282123 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Fixed points are listed in A124068 = row n=7 of A252648. - M. F. Hasler, Apr 12 2015

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..5000

MAPLE

A123253 := proc(n)

        add(d^7, d=convert(n, base, 10)) ;

end proc: # R. J. Mathar, Jan 16 2013

MATHEMATICA

Table[Sum[DigitCount[n][[i]] i^7, {i, 9}], {n, 0, 40}] (* Bruno Berselli, Feb 01 2013 *)

PROG

(MAGMA) [0] cat [&+[d^7: d in Intseq(n)]: n in [1..40]]; // Bruno Berselli, Feb 01 2013

(PARI) A123253(n)=sum(i=1, #n=digits(n), n[i]^7) \\ M. F. Hasler, Apr 12 2015

CROSSREFS

Cf. A003132, A055012, A055013, A055014, A055015, A210840.

Sequence in context: A331198 A250365 A017678 * A001015 A050754 A113852

Adjacent sequences:  A123250 A123251 A123252 * A123254 A123255 A123256

KEYWORD

easy,nonn,base

AUTHOR

Zerinvary Lajos, Nov 06 2006

STATUS

approved

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Last modified July 12 10:09 EDT 2020. Contains 335657 sequences. (Running on oeis4.)