A170988 Carryless product n X n in base 7.

0, 1, 4, 2, 2, 4, 1, 49, 64, 81, 93, 58, 74, 85, 196, 225, 207, 233, 212, 242, 218, 98, 141, 137, 128, 121, 116, 106, 98, 106, 116, 121, 128, 137, 141, 196, 218, 242, 212, 233, 207, 225, 49, 85, 74, 58, 93, 81, 64, 2401, 2500, 2601, 2697, 2452, 2552, 2647, 3136, 3249

Offset

0,3

Links

Seiichi Manyama, Table of n, a(n) for n = 0..2400

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) a(n) = fromdigits(Vec(Pol(digits(n, 7))^2)%7, 7); \\ Seiichi Manyama, Mar 09 2023

Crossrefs

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

Sequence in context: A053879 A216671 A251628 * A141035 A100854 A194688

Adjacent sequences: A170985 A170986 A170987 * A170989 A170990 A170991

Keyword

nonn,base,look

Author

N. J. A. Sloane, Aug 29 2010

Status

approved