|
Search: id:A059170
|
|
|
| A059170 |
|
Strictly undulating primes (digits alternate and differ by 1). |
|
+0
2
|
|
| 2, 3, 5, 7, 23, 43, 67, 89, 101, 787, 32323, 78787, 1212121, 323232323, 989898989, 12121212121, 32323232323, 787878787878787878787, 787878787878787878787878787
(list; graph; listen)
|
|
|
OFFSET
|
0,1
|
|
|
REFERENCES
|
Of form ababa... with |a-b| = 1.
C. A. Pickover, "Keys to Infinity", Wiley 1995, p. 159,160.
C. A. Pickover, "Wonders of Numbers", Oxford New York 2001, Chapter 52, pp. 123-124, 316-317.
|
|
LINKS
|
P. De Geest, More undulating primes
C. A. Pickover, "Wonders of Numbers, Adventures in Mathematics, Mind and Meaning," Zentralblatt review
|
|
CROSSREFS
|
Cf. A032758, A059168, A048398, A033619, A046075, A059758.
Sequence in context: A155873 A106711 A048398 this_sequence A068710 A120805 A096265
Adjacent sequences: A059167 A059168 A059169 this_sequence A059171 A059172 A059173
|
|
KEYWORD
|
nonn,base
|
|
AUTHOR
|
N. J. A. Sloane (njas(AT)research.att.com), Feb 14 2001
|
|
EXTENSIONS
|
Extended by Patrick De Geest (pdg(AT)worldofnumbers.com), Feb 25 2001.
|
|
|
Search completed in 0.002 seconds
|
