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A170989 Carryless product n X n in base 8. 1

%I #13 Mar 09 2023 10:01:00

%S 0,1,4,1,0,1,4,1,64,81,100,113,64,81,100,113,256,289,260,289,256,289,

%T 260,289,64,113,100,81,64,113,100,81,0,1,4,1,0,1,4,1,64,81,100,113,64,

%U 81,100,113,256,289,260,289,256,289,260,289,64,113,100,81,64,113,100,81,4096,4225

%N Carryless product n X n in base 8.

%H Seiichi Manyama, <a href="/A170989/b170989.txt">Table of n, a(n) for n = 0..4095</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, 8))^2)%8, 8); \\ _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

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Last modified April 24 06:03 EDT 2024. Contains 371918 sequences. (Running on oeis4.)