|
Search: id:A061431
|
|
|
| A061431 |
|
a(n) = LCM of the n consecutive numbers n(n-1)/2 + 1 ... n(n+1)/2. |
|
+0
7
|
|
| 1, 6, 60, 2520, 60060, 1627920, 124324200, 1694579040, 446626220040, 73706596563600, 177223661334720, 171986625946535400, 3290057629552053360
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
EXAMPLE
|
a(1) = 1, a(2) = LCM(2,3) = 6, a(3) = LCM(4,5,6) = 60, etc.
|
|
CROSSREFS
|
Sequence in context: A003267 A010574 A082681 this_sequence A075069 A077682 A055331
Adjacent sequences: A061428 A061429 A061430 this_sequence A061432 A061433 A061434
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
Amarnath Murthy (amarnath_murthy(AT)yahoo.com), May 03 2001
|
|
EXTENSIONS
|
More terms from John W. Layman (layman(AT)math.vt.edu), Oct 16 2001
|
|
|
Search completed in 0.002 seconds
|
