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A034087 Numbers divisible by the sum of the squares of their digits. 9
1, 10, 20, 50, 100, 110, 111, 120, 130, 133, 200, 210, 240, 267, 298, 310, 315, 360, 372, 376, 400, 420, 480, 500, 532, 550, 630, 803, 917, 973, 1000, 1010, 1011, 1020, 1030, 1071, 1100, 1101, 1110, 1134, 1148, 1200, 1211, 1222, 1290, 1300, 1302, 1316 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Carmine Suriano, Table of n, a(n) for n = 1..3465

FORMULA

A003132[a(n)] | a(n). - R. J. Mathar, Feb 25 2007

EXAMPLE

a(100)=4131 since 4^2+1^2+3^2+1^2=27 divides 4131. - Carmine Suriano, May 04 2013

MAPLE

isA034087 := proc(n) if n mod A003132(n) = 0 then true ; else false ; end if ; end proc:

for n from 1 to 1800 do if isA034087(n) then printf("%d ", n) ; end if ; end do ; # R. J. Mathar, Feb 25 2007

CROSSREFS

Sequence in context: A269234 A160517 A072081 * A117562 A169663 A250602

Adjacent sequences:  A034084 A034085 A034086 * A034088 A034089 A034090

KEYWORD

base,easy,nonn

AUTHOR

Erich Friedman

STATUS

approved

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Last modified July 19 22:14 EDT 2019. Contains 325168 sequences. (Running on oeis4.)