A171383 - OEIS

%I #15 Feb 16 2025 08:33:11

%S 197,198,201,285,287,288,289,291,292,295,296,297,439,440,441,446,449,

%T 450,465,467,468,470,647,648,651,652,695,696,1034,1035,1036,1038,1041,

%U 1054,1065,1067,1068,1079,1080,1086,1142,1143,1144,1146,1153,1182,1183,1184,1186,1189

%N Solutions to the equation M(n) = -7 (M = Mertens's function A002321).

%H Seiichi Manyama, <a href="/A171383/b171383.txt">Table of n, a(n) for n = 1..10000</a>

%H Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/MertensFunction.html">Mertens Function</a>

%t Position[Accumulate[MoebiusMu[Range[1200]]], -7]//Flatten (* _Vincenzo Librandi_, Jan 05 2019 *)

%Y Cf. A002321.

%K nonn,changed

%O 1,1

%A Neven Juric (neven.juric(AT)apis-it.hr), Sep 28 2010

%E More terms from _Seiichi Manyama_, Jan 05 2019