A170986 Carryless product n X n in base 5.

0, 1, 4, 4, 1, 25, 36, 49, 34, 41, 100, 121, 119, 114, 106, 100, 106, 114, 119, 121, 25, 41, 34, 49, 36, 625, 676, 729, 654, 701, 900, 961, 899, 934, 991, 1225, 1171, 1219, 1139, 1181, 850, 781, 839, 769, 821, 1025, 1091, 1009, 1074, 1111, 2500, 2601, 2579, 2554, 2526

Offset

0,3

Links

Seiichi Manyama, Table of n, a(n) for n = 0..3124

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, 5))^2)%5, 5); \\ Seiichi Manyama, Mar 09 2023

Crossrefs

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

Sequence in context: A098364 A116866 A126280 * A071207 A136214 A067328

Adjacent sequences: A170983 A170984 A170985 * A170987 A170988 A170989

Keyword

nonn,base,look

Author

N. J. A. Sloane, Aug 29 2010

Status

approved