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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 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS a(152) has 1218 digits, so is too large for a b-file. - Robert Israel, Sep 19 2019 LINKS Robert Israel, Table of n, a(n) for n = 1..151 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 Adjacent sequences: A088140 A088141 A088142 * A088144 A088145 A088146 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

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Last modified May 30 14:11 EDT 2023. Contains 363055 sequences. (Running on oeis4.)