A171438 a(n) = 0+1+2+...+n in lunar arithmetic in base 3 written in base 10.

0, 1, 2, 5, 5, 5, 8, 8, 8, 17, 17, 17, 17, 17, 17, 17, 17, 17, 26, 26, 26, 26, 26, 26, 26, 26, 26, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80

Offset

0,3

Links

Table of n, a(n) for n=0..71.

D. Applegate, M. LeBrun and N. J. A. Sloane, Dismal Arithmetic [Note: we have now changed the name from "dismal arithmetic" to "lunar arithmetic" - the old name was too depressing]

Index entries for sequences related to dismal (or lunar) arithmetic

Crossrefs

Sequence in context: A374359 A186501 A235452 * A200683 A286541 A078576

Adjacent sequences: A171435 A171436 A171437 * A171439 A171440 A171441

Keyword

nonn,base

Author

N. J. A. Sloane, Oct 02 2010

Status

approved