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A135050 Numbers k such that sum of digits of k^3 is 8. Multiples of 10 are omitted. 0
2, 5, 8, 11, 101, 1001, 10001, 100001, 1000001, 10000001, 100000001, 1000000001, 10000000001, 100000000001, 1000000000001, 10000000000001, 100000000000001, 1000000000000001, 10000000000000001, 100000000000000001, 1000000000000000001, 10000000000000000001 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

All numbers of form 10..01 are eligible. Are there larger terms of other forms?

All terms up to 10^20 are of this form, except for 2, 5 and 8. - Max Alekseyev, Feb 11 2008

Numbers k such that k > 1 and sum of digits of k^3 is less than 9. Multiples of 10 are omitted. - Farideh Firoozbakht, Oct 18 2013

LINKS

Table of n, a(n) for n=1..22.

EXAMPLE

2^3=8, 5^3=125, 8^3=512, 11^3=1331, 101^3=1030301, 1001^3=1003003001, 10001^3=1000300030001.

MATHEMATICA

Do[If[Total[IntegerDigits[m^3]]==8&&Mod[m, 10]>0, Print[m]], {m, 100000}]

PROG

(PARI) isok(k) = (k % 10) && (sumdigits(k^3) == 8); \\ Michel Marcus, Feb 19 2021

CROSSREFS

Sequence in context: A246442 A056661 A229883 * A004112 A024815 A073837

Adjacent sequences: A135047 A135048 A135049 * A135051 A135052 A135053

KEYWORD

nonn,base

AUTHOR

Zak Seidov, Feb 11 2008

EXTENSIONS

a(9) onwards from Max Alekseyev, Feb 11 2008

STATUS

approved

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Last modified December 4 02:16 EST 2022. Contains 358544 sequences. (Running on oeis4.)