|
Search: id:A107273
|
|
|
| A107273 |
|
Vertically symmetrical dates MMDDYYYY (american notation) considered as numbers, in increasing order. |
|
+0
1
|
|
| 10011001, 10025001, 10052001, 10088001, 10100101, 10111101, 10125101, 10152101, 10188101, 10200501, 10211501, 10225501, 10252501, 10288501, 11011011, 11025011, 11052011, 11088011, 11100111, 11111111, 11125111
(list; graph; listen)
|
|
|
OFFSET
|
10011001,1
|
|
|
COMMENT
|
2 and 5 are taken as mirror images (as on calculator displays). a(1)=10011001 and a(20)=11111111 shared the property to present also two symmetrical halves.
This sequence has exactly 42 terms, ending with 12288551 (Dec. 28th 8551).
|
|
CROSSREFS
|
Cf. A053701, A106605.
Sequence in context: A072144 A087510 A139120 this_sequence A106605 A107275 A048938
Adjacent sequences: A107270 A107271 A107272 this_sequence A107274 A107275 A107276
|
|
KEYWORD
|
base,easy,fini,nonn
|
|
AUTHOR
|
Alexandre Wajnberg (alexandre.wajnberg(AT)ulb.ac.be), May 19 2005
|
|
|
Search completed in 0.002 seconds
|
