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A295389 Numbers n such that the sum of digits of n is squarefree. 1
1, 2, 3, 5, 6, 7, 10, 11, 12, 14, 15, 16, 19, 20, 21, 23, 24, 25, 28, 29, 30, 32, 33, 34, 37, 38, 41, 42, 43, 46, 47, 49, 50, 51, 52, 55, 56, 58, 59, 60, 61, 64, 65, 67, 68, 69, 70, 73, 74, 76, 77, 78, 82, 83, 85, 86, 87, 89, 91, 92, 94, 95, 96, 98, 100, 101, 102, 104, 105, 106, 109, 110, 111, 113, 114 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Numbers n such that A007953(n) is a term of A005117. - Felix Fröhlich, Nov 21 2017

LINKS

Robert Israel, Table of n, a(n) for n = 1..10000

MAPLE

select(n -> numtheory:-issqrfree(convert(convert(n, base, 10), `+`)), [$1..200]); # Robert Israel, Nov 21 2017

PROG

(PARI) is(n) = issquarefree(sumdigits(n));

for(n = 1, 200, if(is(n), print1(n, ", ")))

CROSSREFS

Cf. A005117, A007953. Includes A028834.

Sequence in context: A066940 A305318 A100118 * A028781 A136149 A101882

Adjacent sequences:  A295386 A295387 A295388 * A295390 A295391 A295392

KEYWORD

hear,nonn,base

AUTHOR

Nile Nepenthe Wynar, Nov 21 2017

STATUS

approved

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Last modified June 1 18:43 EDT 2020. Contains 334762 sequences. (Running on oeis4.)