|
Search: id:A136545
|
|
|
| A136545 |
|
Semi-chaotic binary digit sum/product sequence modeled on a Rudin-Shapiro-type sequence like A014081. |
|
+0
2
|
|
| 0, 1, 2, 2, 3, 3, 3, 5, 3, 6, 4, 7, 4, 7, 4, 11, 3, 12, 4, 13, 5, 14, 5, 15, 4, 17, 5, 17, 5, 17, 5, 22, 3, 23, 4, 24, 5, 25, 5, 27, 5, 29, 6, 29, 6, 29, 6, 32, 4, 33
(list; graph; listen)
|
|
|
OFFSET
|
1,3
|
|
|
FORMULA
|
a(n)=Sum[1 - Mod[n - Floor[n/2^m], 2]Mod[n - Floor[n/2^(m - 1)], 2],{m, 1, Floor[(n)*Log[2]]}]
|
|
MATHEMATICA
|
Clear[s, k, n] k[n_] := Apply[Plus, Table[1 - Mod[n - Floor[n/2^m], 2]Mod[n - Floor[n/2^(m - 1)], 2], {m, 1, Floor[(n)*Log[2]]}]]; a = Table[k[n], {n, 1, 50}]
|
|
CROSSREFS
|
Cf. A014081.
Adjacent sequences: A136542 A136543 A136544 this_sequence A136546 A136547 A136548
Sequence in context: A110869 A110876 A136132 this_sequence A125843 A147665 A127332
|
|
KEYWORD
|
nonn,uned
|
|
AUTHOR
|
Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Mar 24 2008
|
|
|
Search completed in 0.002 seconds
|
