A186523 In lunar arithmetic in base 3, this is the number of lunar divisors of the number 111...1 (with n 1's).

2, 6, 14, 34, 82, 206, 526, 1378, 3674, 9950, 27278, 75514, 210634, 591054, 1666406, 4716186, 13389434, 38113462, 108737894, 310851770, 890244546, 2553782246, 7337143110, 21110531858, 60823037522, 175471424214, 506862346750, 1465875933394, 4244315841666, 12302751068958, 35699515448510, 103697897085458, 301514033677482, 877521633678990

Offset

1,1

Links

Table of n, a(n) for n=1..34.

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. A079500 (the base 2 analog).

Sequence in context: A018016 A182644 A099425 * A177790 A307068 A269506

Adjacent sequences: A186520 A186521 A186522 * A186524 A186525 A186526

Keyword

nonn,base

Author

N. J. A. Sloane, Feb 24 2011

Status

approved