|
| |
|
|
A071224
|
|
LCM of n and n-th composite number.
|
|
1
| |
|
|
4, 6, 24, 36, 10, 12, 14, 120, 144, 90, 220, 84, 286, 168, 75, 208, 459, 252, 570, 160, 231, 374, 805, 72, 950, 78, 1080, 84, 1276, 90, 1426, 96, 1617, 850, 1785, 468, 1998, 2090, 2184, 2280, 2378, 420, 2666, 2772, 2880, 2990, 3102, 816, 3381
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
FORMULA
| a(n) = n*A002808(n)/A064814(n). - Lior Manor (lior.manor(AT)gmail.com) Jun 02 2002
|
|
|
EXAMPLE
| a(10)=90 as 18 is the 10th composite number and 10*18/gcd(10,18)=10*18/2=90.
|
|
|
CROSSREFS
| Sequence in context: A123046 A087784 A174197 * A164532 A098660 A122174
Adjacent sequences: A071221 A071222 A071223 * A071225 A071226 A071227
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), May 17 2002
|
|
|
EXTENSIONS
| More terms from Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 28 2002
More terms from Lior Manor (lior.manor(AT)gmail.com) Jun 02 2002
|
| |
|
|
