|
Search: id:A101994
|
|
|
| A101994 |
|
Numbers n such that 4n-1, 8n-1, 16n-1, 32n-1 and 64n-1 are primes. |
|
+0
8
|
|
| 45, 13410, 15855, 31710, 31785, 63570, 74025, 85230, 151830, 202635, 267300, 280665, 399675, 405405, 455250, 466560, 478170, 480240, 511335, 534600, 539475, 561330, 569520, 589305, 666945, 716460, 743160, 748215, 766785, 799350, 860835
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
EXAMPLE
|
4*45-1=179, 8*45-1=359, 16*45-1=719, 32*45-1=1439 and 64*45-1=2879 are primes, so the first entry is 45.
|
|
CROSSREFS
|
Cf. A002515, A101790, A101794. Cf. A101995, A101996, A101997, A101998, A101999.
Sequence in context: A061542 A037182 A134229 this_sequence A007537 A125113 A003739
Adjacent sequences: A101991 A101992 A101993 this_sequence A101995 A101996 A101997
|
|
KEYWORD
|
easy,nonn
|
|
AUTHOR
|
Douglas Stones (dssto1(AT)student.monash.edu.au), Dec 23 2004
|
|
|
Search completed in 0.002 seconds
|
