A169999 - OEIS

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A169999

Carryless product n X n in base 3.

0, 1, 1, 9, 16, 13, 9, 13, 16, 81, 100, 91, 144, 142, 157, 117, 112, 133, 81, 91, 100, 117, 133, 112, 144, 157, 142, 729, 784, 757, 900, 961, 931, 819, 877, 853, 1296, 1369, 1333, 1278, 1249, 1237, 1413, 1381, 1456, 1053, 1117, 1099, 1008, 997, 1030, 1197, 1183, 1141

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,4

LINKS

Antti Karttunen, Table of n, a(n) for n = 0..19682

David Applegate, Marc LeBrun and N. J. A. Sloane, Carryless Arithmetic (I): The Mod 10 Version

Index entries for sequences related to carryless arithmetic

PROG

(PARI)

A325820sq(b, c) = fromdigits(Vec(Pol(digits(b, 3))*Pol(digits(c, 3)))%3, 3);

A169999(n) = A325820sq(n, n); \\ Antti Karttunen, Jun 17 2019

CROSSREFS