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 A226969 Numbers whose base-4 sum of digits is 4. 8
 7, 10, 13, 19, 22, 25, 28, 34, 37, 40, 49, 52, 67, 70, 73, 76, 82, 85, 88, 97, 100, 112, 130, 133, 136, 145, 148, 160, 193, 196, 208, 259, 262, 265, 268, 274, 277, 280, 289, 292, 304, 322, 325, 328, 337, 340, 352, 385, 388, 400, 448, 514, 517, 520, 529, 532 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Subsequence of A016777. - Michel Marcus, Sep 03 2013 In general, the set of numbers with sum of base-b digits equal to b is a subset of { (b-1)*k + 1; k = 2, 3, 4, ... }. - M. F. Hasler, Dec 23 2016 LINKS EXAMPLE The quaternary expansion of 13 is (3,1), which has sum of digits 4. The quaternary expansion of 40 is (2,2,0), which has sum of digits 4. 17 is not on the list since the quaternary expansion of 17 is (1,0,1), which has sum of digits 2 not 4. MATHEMATICA Select[Range@ 540, Total@ IntegerDigits[#, 4] == 4 &] (* Michael De Vlieger, Dec 23 2016 *) PROG (Sage) [i for i in [0..1000] if sum(Integer(i).digits(base=4))==4] (PARI) select( is(n)=sumdigits(n, 4)==4, [1..999]) \\ M. F. Hasler, Dec 23 2016 CROSSREFS Cf. A018900, A187813. Cf. A226636 (b = 3), A227062 (b = 5), A227080 (b = 6), A227092 (b = 7), A227095 (b = 8), A227238 (b = 9), A052224 (b = 10). Sequence in context: A327137 A026319 A120153 * A007770 A212979 A114961 Adjacent sequences:  A226966 A226967 A226968 * A226970 A226971 A226972 KEYWORD nonn,base AUTHOR Tom Edgar, Sep 01 2013 STATUS approved

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Last modified April 15 07:59 EDT 2021. Contains 342975 sequences. (Running on oeis4.)