A061425 Sum of digits = 8 times number of digits.

8, 79, 88, 97, 699, 789, 798, 879, 888, 897, 969, 978, 987, 996, 5999, 6899, 6989, 6998, 7799, 7889, 7898, 7979, 7988, 7997, 8699, 8789, 8798, 8879, 8888, 8897, 8969, 8978, 8987, 8996, 9599, 9689, 9698, 9779, 9788, 9797, 9869, 9878, 9887, 9896, 9959

Offset

1,1

Links

Robert Israel, Table of n, a(n) for n = 1..10000

Example

879 is a term as the arithmetic mean of the digits is (8+7+9)/3 = 8.

Maple

Q:= proc(n, t) option remember; local j, R;
      if t > 9*n or t <= 0 then return [] fi;
      R:= NULL;
      for j from 0 to min(t, 9) do
        R:= R, op(map(s -> 10*s+j, procname(n-1, t-j)))
      od;
      [R]
end proc;
for i from 0 to 9 do Q(1, i):= [i] od:
seq(op(sort(Q(d, 8*d))), d=1..4); # Robert Israel, Dec 07 2020

Crossrefs

Cf. A061383-A061388, A061423-A061424.

Sequence in context: A145508 A266090 A366214 * A160605 A353100 A224759

Adjacent sequences: A061422 A061423 A061424 * A061426 A061427 A061428

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