A171230 a(n) = 0+1+2+...+n in lunar arithmetic in base 2 written in base 2.

0, 1, 11, 11, 111, 111, 111, 111, 1111, 1111, 1111, 1111, 1111, 1111, 1111, 1111, 11111, 11111, 11111, 11111, 11111, 11111, 11111, 11111, 11111, 11111, 11111, 11111, 11111, 11111, 11111, 11111, 111111, 111111, 111111, 111111, 111111

Offset

0,3

Links

Table of n, a(n) for n=0..36.

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

Cf. A003817.

Sequence in context: A188548 A290671 A290416 * A131664 A289404 A278787

Adjacent sequences: A171227 A171228 A171229 * A171231 A171232 A171233

Keyword

nonn,base

Author

N. J. A. Sloane, Oct 02 2010

Status

approved