|
Search: id:A126755
|
|
|
| A126755 |
|
Braille numberdromes: numbers which read the same backwards and forwards in Braille. |
|
+0
1
|
|
| 1, 2, 3, 7, 11, 22, 33, 46, 59, 64, 77, 80, 95, 111, 121, 131, 161, 171, 212, 222, 232, 262, 272, 313, 323, 333, 373, 416, 426, 436, 476, 519, 529, 539, 579, 614, 624, 634, 674, 717, 727, 737, 777, 810, 820, 830, 870, 915, 925, 935, 975
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
COMMENT
|
The pairs 4 and 6, 5 and 9 and 0 and 8 are mirror images of each other. When a Braille number is read backward (as a mirror-image) the number is usually not the same as the original. Those that are the same could be called by analogy with the ordinary numberdromes the Braille numberdromes. Those with "a double yolk", such as 1081, would be Braille numberddromes, by analogy with palinddromes.
|
|
EXAMPLE
|
a(8) = 46 because in Braille 4 and 6 are mirror images of each other.
|
|
CROSSREFS
|
Cf. A121018.
Sequence in context: A037078 A034431 A095766 this_sequence A034795 A165318 A108184
Adjacent sequences: A126752 A126753 A126754 this_sequence A126756 A126757 A126758
|
|
KEYWORD
|
easy,nonn,base
|
|
AUTHOR
|
Michael Joseph Halm (hierogamous(AT)lycos.com), Apr 23 2007
|
|
|
Search completed in 0.002 seconds
|
