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

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

Main diagonal of A325820.

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

Sequence in context: A133816 A048752 A293376 * A110151 A131746 A092095

Adjacent sequences: A169996 A169997 A169998 * A170000 A170001 A170002

Keyword

nonn,base,look

Author

N. J. A. Sloane, Aug 29 2010

Status

approved