|
| |
|
|
A035522
|
|
Reverse and add (in binary) - written in base 10.
|
|
10
| |
|
|
1, 2, 3, 6, 9, 18, 27, 54, 81, 150, 255, 510, 765, 1530, 2295, 6120, 6885, 12240, 13005, 24480, 25245, 48960, 49725, 97920, 98685, 196224, 197757, 392448, 393981, 785664, 788733, 1571328, 1574397, 3144192, 3150333, 6288384
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,2
|
|
|
LINKS
| Harvey P. Dale, Table of n, a(n) for n = 0..1000
|
|
|
FORMULA
| a(n+1) = A055944(a(n)), a(0) = 1. [Reinhard Zumkeller, Nov 14 2011]
|
|
|
EXAMPLE
| 6 = 110, 110 + 011 = 1001 = 9, so 6 is followed by 9.
|
|
|
MATHEMATICA
| nxt[n_]:=Module[{idn2=IntegerDigits[n, 2]}, FromDigits[idn2+ Reverse[ idn2], 2]]; NestList[nxt, 1, 40] (* From Harvey P. Dale, Oct 02 2011 *)
|
|
|
PROG
| (Haskell)
a035522 n = a035522_list !! n
a035522_list = iterate a055944 1
-- Reinhard Zumkeller, Oct 21 2011
|
|
|
CROSSREFS
| Cf. A035526, A035524.
Sequence in context: A178940 A018264 A081741 * A018311 A018481 A038754
Adjacent sequences: A035519 A035520 A035521 * A035523 A035524 A035525
|
|
|
KEYWORD
| nonn,base,easy,nice
|
|
|
AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), E. M. Rains
|
| |
|
|
