|
Search: id:A065761
|
|
|
| A065761 |
|
Concatenation of increasing number of alternating digits in base 2, starting with 0. |
|
+0
3
|
|
| 0, 3, 24, 399, 12768, 817215, 104603520, 26778501375, 13710592704000, 14039646928897023, 28753196910381103104, 117773094544920998318079, 964797190511992818221703168, 15807237169348490333744384720895
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
COMMENT
|
The first 5 terms in base 2 are 0, (0)11, (0)11000, (0)110001111, (0)11000111100000.
|
|
FORMULA
|
a(1) = 0; a(n+1) = append n+1 0's or 1's (alternately) to a(n).
|
|
EXAMPLE
|
a(5) = 12768 is formed by appending 0 five times (00000) to a(4) in base 2: (0)11000111100000.
|
|
CROSSREFS
|
Cf. A065760, A065447.
Sequence in context: A003236 A082166 A010791 this_sequence A002832 A109055 A056207
Adjacent sequences: A065758 A065759 A065760 this_sequence A065762 A065763 A065764
|
|
KEYWORD
|
base,easy,nonn
|
|
AUTHOR
|
Lior Manor (lior.manor(AT)gmail.com) Nov 18 2001
|
|
|
Search completed in 0.002 seconds
|
