

A098934


Numbers n such that the sum of the first n digits of pi are divisible by n.


0




OFFSET

1,2


COMMENTS

For large n, A046974(n1)/n is very close to 4.5, so is never an integer.  David Wasserman, Feb 27 2008


LINKS

Table of n, a(n) for n=1..5.


EXAMPLE

a[1] = 1 since 3 is divisible by 1
a[2] = 2 since 3+1 = 4 is divisible by 2
a[3] <> 3 since 3 + 1 + 4 = 8 is not divisible by 3


MATHEMATICA

$MaxPrecision = 2500000; pd = RealDigits[N[Pi, 2000000]][[1]]; s = 0; Do[s = s + pd[[n]]; If[ Mod[s, n] == 0, Print[n]], {n, 2000000}] (from Robert G. Wilson v Oct 21 2004)


CROSSREFS

Cf. A046974.
Sequence in context: A065554 A034042 A138759 * A237877 A043307 A049343
Adjacent sequences: A098931 A098932 A098933 * A098935 A098936 A098937


KEYWORD

base,easy,fini,full,nonn


AUTHOR

Anne M. Donovan (anned3005(AT)aol.com), Oct 20 2004


STATUS

approved



