A186776 Stanley Sequence S(0,2).

0, 2, 3, 5, 9, 11, 12, 14, 27, 29, 30, 32, 36, 38, 39, 41, 81, 83, 84, 86, 90, 92, 93, 95, 108, 110, 111, 113, 117, 119, 120, 122, 243, 245, 246, 248, 252, 254, 255, 257, 270, 272, 273, 275, 279, 281, 282, 284, 324, 326, 327, 329, 333, 335, 336, 338, 351, 353, 354, 356, 360, 362, 363, 365, 729, 731, 732, 734, 738, 740

Offset

1,2

Comments

See A185256.

In ternary these numbers have 0's and 1's everywhere, except the last digit is either 0 or 2. [Tanya Khovanova, Nov 16 2013]

a(n) = A005836(n) + A000035(n). [Tanya Khovanova, Nov 16 2013]

Links

Alois P. Heinz, Table of n, a(n) for n = 1..2000

Formula

Equals A004793(n)-1, also A033160(n)-2, also A033163(n)-3. Note that A004793 has a recurrence.

Mathematica

Select[Range[0, 1000], MatchQ[IntegerDigits[#, 3], {(0|1)..., 0|2}]&] (* Jean-François Alcover, Jan 13 2019, after Tanya Khovanova *)

Crossrefs

Cf. A185256, A004793, A033160, A033163.

Sequence in context: A056144 A284626 A284847 * A290475 A191183 A078645

Adjacent sequences: A186773 A186774 A186775 * A186777 A186778 A186779

Keyword

nonn

Author

N. J. A. Sloane, Mar 19 2011

Status

approved