|
| |
|
|
A092675
|
|
Primes of the form 80*R_n + 1, where R_n is the repunit (A002275) of length n.
|
|
2
| | |
|
|
|
OFFSET
| 1,1
|
|
|
COMMENTS
| Primes of the form 888...881.
The number of 8's in each term is given by the corresponding term of A056664 and so the first term too large to include above is 888...8881 (with 138 8's).
Primes of the form (8*10^n-71)/9 [From Vincenzo Librandi, Nov 16 2010]
|
|
|
CROSSREFS
| Cf. A056664 (corresponding n).
Cf. A051200, A004022, A093176, A093177, A089346, A093174, A092571.
Sequence in context: A006052 A105976 A137064 * A135127 A035758 A107554
Adjacent sequences: A092672 A092673 A092674 * A092676 A092677 A092678
|
|
|
KEYWORD
| bref,nonn
|
|
|
AUTHOR
| Rick L. Shepherd (rshepherd2(AT)hotmail.com), Mar 02 2004
|
| |
|
|
