|
Search: id:A117326
|
|
|
| A117326 |
|
Indices of semiprimes in A117322 prime(n) modulo semiprime(n). |
|
+0
1
|
|
| 13, 17, 18, 20, 21, 27, 28, 30, 32, 41, 42, 43, 46, 47, 49, 53, 55, 56, 58, 59, 63, 69, 72, 75, 81
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
EXAMPLE
|
a(1) = 13 because A117322(13) = prime(13) modulo semiprime(13) = 41 mod 35 = 6 = 2 * 3 is semiprime.
a(2) = 17 because A117322(17) = 59 mod 49 = 10 = 2 * 5 is semiprime.
a(3) = 18 because A117322(18) = 61 mod 51 = 10 = 2 * 5 is semiprime.
a(4) = 20 because A117322(20) = 71 mod 57 = 14 = 2 * 7 is semiprime.
|
|
CROSSREFS
|
Adjacent sequences: A117323 A117324 A117325 this_sequence A117327 A117328 A117329
Sequence in context: A061060 A084307 A066918 this_sequence A052055 A075761 A046064
|
|
KEYWORD
|
easy,nonn
|
|
AUTHOR
|
Jonathan Vos Post (jvospost2(AT)yahoo.com), Mar 08 2006
|
|
|
Search completed in 0.002 seconds
|
