

A337250


Numbers having at least one 3 in their representation in base 4.


14



3, 7, 11, 12, 13, 14, 15, 19, 23, 27, 28, 29, 30, 31, 35, 39, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 67, 71, 75, 76, 77, 78, 79, 83, 87, 91, 92, 93, 94, 95, 99, 103, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119
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OFFSET

1,1


COMMENTS



LINKS



EXAMPLE

18 is not in the sequence since it is 102_4 in base 4, but 19 is in the sequence since it is 103_4 in base 4.


MAPLE

seq(`if`(numboccur(3, convert(n, base, 4))>0, n, NULL), n=0..100);


MATHEMATICA

Select[ Range[ 0, 100 ], (Count[ IntegerDigits[ #, 4 ], 3 ]>0)& ]


PROG

(PARI) isok(m) = #select(x>(x==3), digits(m, 4)) >= 1; \\ Michel Marcus, Sep 20 2020


CROSSREFS

Cf. A196032 (at least one 0 in base 4).


KEYWORD

nonn,base,easy


AUTHOR



STATUS

approved



