A170985 Carryless product n X n in base 4.

0, 1, 0, 1, 16, 25, 16, 25, 0, 1, 0, 1, 16, 25, 16, 25, 256, 289, 256, 289, 400, 441, 400, 441, 256, 289, 256, 289, 400, 441, 400, 441, 0, 1, 0, 1, 16, 25, 16, 25, 0, 1, 0, 1, 16, 25, 16, 25, 256, 289, 256, 289, 400, 441, 400, 441, 256, 289, 256, 289, 400, 441, 400, 441, 4096, 4225

Offset

0,5

Links

Seiichi Manyama, Table of n, a(n) for n = 0..4095

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, 4))^2)%4, 4); \\ Seiichi Manyama, Mar 09 2023

Crossrefs

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

Sequence in context: A226296 A070571 A087622 * A202335 A071524 A334392

Adjacent sequences: A170982 A170983 A170984 * A170986 A170987 A170988

Keyword

nonn,base,look

Author

N. J. A. Sloane, Aug 29 2010

Status

approved