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A088143
Find the shortest prefix of Pi-3 = .141592653589793238462643383279502.. which is divisible by n and divide by n.
1
1, 7, 47, 35398, 283, 23598775598298873, 2, 17699, 15732517, 1415926535897932384626433832795, 12872, 117993877991494365385536152732919, 1089174258383, 1, 943951, 88495408493620774, 8328979622929, 7866258532766291, 7452244925778591498
OFFSET
1,2
COMMENTS
a(152) has 1218 digits, so is too large for a b-file. - Robert Israel, Sep 19 2019
LINKS
EXAMPLE
1/1 = 1, 14/2 = 7, 141/3 = 47, 141592/4 = 35398, 1415/5 = 283,...
MAPLE
F:= floor((Pi-3)*10^10000):
Prefs:= [seq(floor(F/10^(10000-i)), i=1..10000)]:
f:= proc(n) local i;
for i from 1 to nops(Prefs) do if Prefs[i] mod n = 0 then return Prefs[i]/n fi od:
FAIL
end proc:
map(f, [$1..151]); # Robert Israel, Sep 19 2019
CROSSREFS
Cf. A000796.
Sequence in context: A092480 A354211 A292067 * A124880 A227100 A240334
KEYWORD
base,nonn
AUTHOR
N. J. A. Sloane, Nov 03 2003
EXTENSIONS
Corrected and extended by Ray Chandler and Vladeta Jovovic, Nov 06 2003
Name corrected by Robert Israel, Sep 19 2019
STATUS
approved