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 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 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Complementary sequence of A023717. LINKS François Marques, Table of n, a(n) for n = 1..10000 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). Cf. Numbers with at least one digit b-1 in base b : A074940 (b=3), this sequence, A337572 (b=5), A333656 (b=6), A337141 (b=7), A337239 (b=8), A338090 (b=9), A011539 (b=10), A095778 (b=11). Cf. Numbers with no digit b-1 in base b: A005836 (b=3), A023717 (b=4), A020654 (b=5), A037465 (b=6), A020657 (b=7), A037474 (b=8), A037477 (b=9), A007095 (b=10), A171397 (b=11). Sequence in context: A262505 A083754 A113578 * A043345 A023718 A076184 Adjacent sequences: A337247 A337248 A337249 * A337251 A337252 A337253 KEYWORD nonn,base,easy AUTHOR François Marques, Sep 19 2020 STATUS approved

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Last modified September 18 23:40 EDT 2024. Contains 376002 sequences. (Running on oeis4.)