A170987 - OEIS

%I #13 Mar 09 2023 09:59:07

%S 0,1,4,3,4,1,36,49,64,39,52,61,144,169,160,147,172,157,108,109,112,

%T 111,112,109,144,157,172,147,160,169,36,61,52,39,64,49,1296,1369,1444,

%U 1299,1372,1441,1764,1849,1936,1767,1852,1933,2304,2185,2248,2307,2188,2245

%N Carryless product n X n in base 6.

%H Seiichi Manyama, <a href="/A170987/b170987.txt">Table of n, a(n) for n = 0..7775</a>

%H David Applegate, Marc LeBrun and N. J. A. Sloane, <a href="http://neilsloane.com/doc/carry1.pdf">Carryless Arithmetic (I): The Mod 10 Version</a>.

%H <a href="/index/Ca#CARRYLESS">Index entries for sequences related to carryless arithmetic</a>

%o (PARI) a(n) = fromdigits(Vec(Pol(digits(n, 6))^2)%6, 6); \\ _Seiichi Manyama_, Mar 09 2023

%Y For bases 2 through 10 see A000695, A169999, A170985-A170990 and A059729.

%K nonn,base,look

%O 0,3

%A _N. J. A. Sloane_, Aug 29 2010