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%I A170988 #13 Mar 09 2023 09:59:46
%S A170988 0,1,4,2,2,4,1,49,64,81,93,58,74,85,196,225,207,233,212,242,218,98,
%T A170988 141,137,128,121,116,106,98,106,116,121,128,137,141,196,218,242,212,
%U A170988 233,207,225,49,85,74,58,93,81,64,2401,2500,2601,2697,2452,2552,2647,3136,3249
%N A170988 Carryless product n X n in base 7.
%H A170988 Seiichi Manyama, <a href="/A170988/b170988.txt">Table of n, a(n) for n = 0..2400</a>
%H A170988 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 A170988 <a href="/https/oeis.org/index/Ca#CARRYLESS">Index entries for sequences related to carryless arithmetic</a>
%o A170988 (PARI) a(n) = fromdigits(Vec(Pol(digits(n, 7))^2)%7, 7); \\ _Seiichi Manyama_, Mar 09 2023
%Y A170988 For bases 2 through 10 see A000695, A169999, A170985-A170990 and A059729.
%K A170988 nonn,base,look
%O A170988 0,3
%A A170988 _N. J. A. Sloane_, Aug 29 2010

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