|
Search: id:A075686
|
|
|
| A075686 |
|
In base 4, n sets a new record for the number of Reverse and Add! steps needed to reach a palindrome starting with n. |
|
+0
3
|
|
| 0, 4, 7, 26, 28, 127, 199, 296, 511, 3119, 16861, 18164, 19453, 20468, 270824
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
COMMENT
|
RECORDS transform of A075685. - Base-4 analogue of A065198 (base 10) and A066144 (base 2). Integers like 290, for which a palindrome is (presumably) never reached (cf. A075420), are of course disregarded. A075687 gives the corresponding records.
|
|
LINKS
|
N. J. A. Sloane, Transforms
Index entries for sequences related to Reverse and Add!
|
|
EXAMPLE
|
Starting with 26, 3 Reverse and Add! steps are needed to reach a palindrome; starting with n < 26, less (at most 2) steps are needed.
|
|
CROSSREFS
|
Cf. A065198, A066144, A075420, A075685, A075687.
Sequence in context: A073218 A151348 A110413 this_sequence A077441 A076148 A146085
Adjacent sequences: A075683 A075684 A075685 this_sequence A075687 A075688 A075689
|
|
KEYWORD
|
base,more,nonn
|
|
AUTHOR
|
Klaus Brockhaus. (klaus-brockhaus(AT)t-online.de), Sep 24 2002
|
|
|
Search completed in 0.002 seconds
|
