A085370 - OEIS

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A085370

Niven (or Harshad) numbers that are not divisible by 3.

1

1, 2, 4, 5, 7, 8, 10, 20, 40, 50, 70, 80, 100, 110, 112, 133, 140, 152, 190, 200, 209, 220, 224, 230, 247, 266, 280, 308, 320, 322, 364, 370, 392, 400, 407, 410, 440, 448, 460, 476, 481, 500, 506, 511, 512, 518, 550, 592, 605, 629, 640, 644, 700, 704, 715

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

a(n) mod A007953(a(n)) = 0 and A007953(a(n)) mod 3 > 0;

Intersection of A005349 and A001651.

LINKS

Table of n, a(n) for n=1..55.

Eric Weisstein's World of Mathematics, Harshad Number

CROSSREFS

Sequence in context: A127964 A269929 A364238 * A006693 A281641 A158850

Adjacent sequences: A085367 A085368 A085369 * A085371 A085372 A085373

KEYWORD

nonn,base

AUTHOR

Reinhard Zumkeller, Jun 26 2003

STATUS

approved