|
Search: id:A133609
|
|
|
| A133609 |
|
Numbers n such that n, n+2 and n+4 are consecutive semiprimes. |
|
+0
1
|
|
| 183, 287, 319, 411, 413, 469, 515, 533, 579, 667, 685, 789, 813, 1055, 1077, 1133, 1145, 1165, 1203, 1253, 1313, 1347, 1383, 1385, 1387, 1389, 1561, 1685, 1687, 1793, 1795, 1817, 1839, 1849, 1919, 1937, 1957, 1959, 2045, 2047, 2155, 2227, 2315, 2317
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
COMMENT
|
Terms n in A136196 such that n+2 are also in A136196.
|
|
EXAMPLE
|
183, 185 and 187 are 59th, 60th and 61th semiprimes,
287, 289 and 291 are 89th, 90th and 91th semiprimes,
319, 321 and 323 are 101th, 102th and 103th semiprimes.
|
|
CROSSREFS
|
Cf. A136196.
Adjacent sequences: A133606 A133607 A133608 this_sequence A133610 A133611 A133612
Sequence in context: A048546 A015306 A028676 this_sequence A030465 A061657 A121733
|
|
KEYWORD
|
nonn,less
|
|
AUTHOR
|
Zak Seidov (zakseidov(AT)yahoo.com), Dec 28 2007
|
|
|
Search completed in 0.002 seconds
|
