login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A070958
Numbers n such that the largest digit of n is the same as the largest digit of (sum of digits of n).
2
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 199, 200, 288, 289, 298, 300, 377, 378, 379, 387, 397, 400, 466, 467, 468, 469, 476, 486, 496, 500, 555, 556, 557, 558, 559, 565, 575, 585, 595, 600, 646, 647, 648, 649, 655, 664, 674
OFFSET
1,3
LINKS
Eric Weisstein's World of Mathematics, Digit Sum
EXAMPLE
(Largest digit of 397) = (largest digit of 3+9+7 = 19) = 9, therefore 397 is a term.
MAPLE
A070958 := proc(n) option remember: local d, k: if(n=1)then return 0:fi: for k from procname(n-1)+1 do d:=convert(k, base, 10): if(max(op(d)) = max(op(convert(add(d[j], j=1..nops(d)), base, 10))))then return k: fi: od: end: seq(A070958(n), n=1..100); # Nathaniel Johnston, May 05 2011
CROSSREFS
Cf. A107085.
Sequence in context: A080459 A093475 A032571 * A051596 A071061 A037124
KEYWORD
nonn,easy,base
AUTHOR
Reinhard Zumkeller, May 16 2002; revised May 11 2005
EXTENSIONS
Corrected by Alexandre Wajnberg, May 11 2005
STATUS
approved