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 A052221 Numbers whose sum of digits is 7. 34
 7, 16, 25, 34, 43, 52, 61, 70, 106, 115, 124, 133, 142, 151, 160, 205, 214, 223, 232, 241, 250, 304, 313, 322, 331, 340, 403, 412, 421, 430, 502, 511, 520, 601, 610, 700, 1006, 1015, 1024, 1033, 1042, 1051, 1060, 1105, 1114, 1123, 1132, 1141, 1150, 1204 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS A007953(a(n)) = 7; number of repdigits = #{7,1111111} = A242627(7) = 2. - Reinhard Zumkeller, Jul 17 2014 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..1000 MATHEMATICA Select[Range[1500], Total[IntegerDigits[#]]==7&] (* Harvey P. Dale, Apr 11 2012 *) PROG (MAGMA) [n: n in [1..1500] | &+Intseq(n) eq 7 ]; // Vincenzo Librandi, Mar 08 2013 (Haskell) a052221 n = a052221_list !! (n-1) a052221_list = filter ((== 7) . a007953) [0..] -- Reinhard Zumkeller, Jul 17 2014 CROSSREFS Cf. A007953. Cf. A011557 (1), A052216 (2), A052217 (3), A052218 (4), A052219 (5), A052220 (6), A052222 (8), A052223 (9), A052224 (10), A166311 (11), A235151 (12), A143164 (13), A235225(14), A235226 (15), A235227 (16), A166370 (17), A235228 (18), A166459 (19), A235229 (20). Sequence in context: A043481 A217009 A017245 * A119461 A028560 A190530 Adjacent sequences:  A052218 A052219 A052220 * A052222 A052223 A052224 KEYWORD nonn,base,easy AUTHOR Henry Bottomley, Feb 01 2000 EXTENSIONS Offset changed from Bruno Berselli, Mar 07 2013 STATUS approved

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Last modified January 23 04:28 EST 2019. Contains 319370 sequences. (Running on oeis4.)