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A102861 Numbers which in base 5 have digit-sum 4. 0
4, 8, 12, 16, 20, 28, 32, 36, 40, 52, 56, 60, 76, 80, 100, 128, 132, 136, 140, 152, 156, 160, 176, 180, 200, 252, 256, 260, 276, 280, 300, 376, 380, 400, 500, 628, 632, 636, 640, 652, 656, 660, 676, 680, 700, 752, 756, 760, 776, 780, 800, 876, 880, 900, 1000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Or, sums of four powers of 5.

LINKS

Table of n, a(n) for n=1..55.

FORMULA

The author would like a formula for the n-th term.

EXAMPLE

In base 5 the numbers are 4, 13, 31, 40, 103, 112, 121, 130, 202, 211, 220, 301, 310, 400, 1003, ...

MAPLE

for n from 0 to 2500 do if coeff(series(add(x^(5^i), i=0..4)^4, x, 2500), x, n)<>0 then printf(`%d, `, n); fi:od:

CROSSREFS

Cf. A055235.

Sequence in context: A311235 A311236 A311237 * A311238 A311239 A311240

Adjacent sequences:  A102858 A102859 A102860 * A102862 A102863 A102864

KEYWORD

nonn,base,easy

AUTHOR

Sergi Adamchuk (adamchuk(AT)gmail.com), Mar 15 2005

EXTENSIONS

More terms from Joshua Zucker, May 15 2006

STATUS

approved

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Last modified May 9 00:09 EDT 2021. Contains 343685 sequences. (Running on oeis4.)