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 A061385 Numbers n such that sum of digits = twice number of digits. 5
 2, 13, 22, 31, 40, 105, 114, 123, 132, 141, 150, 204, 213, 222, 231, 240, 303, 312, 321, 330, 402, 411, 420, 501, 510, 600, 1007, 1016, 1025, 1034, 1043, 1052, 1061, 1070, 1106, 1115, 1124, 1133, 1142, 1151, 1160, 1205, 1214, 1223, 1232, 1241, 1250, 1304 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Robert Israel, Table of n, a(n) for n = 1..10000 EXAMPLE 141 is a term as the arithmetic mean of the digits is (1+4+1)/3 = 2. MAPLE S:= proc(d, k, flag) option remember;   if d = 1 then     if k >= 0 and k <= 9 then return [k]     else return []     fi   fi;   [seq(op(map(`+`, procname(d-1, k-i, 0), i*10^(d-1))), i=flag..min(k, 9))] end proc: seq(op(S(d, 2*d, 1)), d=1..5); # Robert Israel, Apr 23 2017 PROG (MAGMA) [ n: n in [1..1310] | &+Intseq(n) eq 2*#Intseq(n) ];  // Bruno Berselli, Jun 30 2011 CROSSREFS Cf. A061383-A061388, A061423-A061425. Sequence in context: A285087 A085509 A127485 * A304815 A156179 A090519 Adjacent sequences:  A061382 A061383 A061384 * A061386 A061387 A061388 KEYWORD nonn,base,easy AUTHOR Amarnath Murthy, May 03 2001 EXTENSIONS More terms from Larry Reeves (larryr(AT)acm.org), May 16 2001 STATUS approved

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Last modified May 7 19:23 EDT 2021. Contains 343652 sequences. (Running on oeis4.)