|
| |
|
|
A118456
|
|
a(n) = product{k=1..n} P(k), where P(k) is the smallest prime >= k.
|
|
5
| |
|
|
2, 4, 12, 60, 300, 2100, 14700, 161700, 1778700, 19565700, 215222700, 2797895100, 36372636300, 618334817100, 10511691890700, 178698762141900, 3037878956412300, 57719700171833700, 1096674303264840300, 25223508975091326900, 580140706427100518700, 13343236247823311930100
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
EXAMPLE
| a(5)=300 because the smallest primes that are not smaller than 1,2,3,4 and 5 are 2,2,3,5 and 5, respectively, having product 2*2*3*5*5=300.
|
|
|
MAPLE
| a:=n->product(nextprime(k-1), k=1..n): seq(a(n), n=1..22); (Deutsch)
|
|
|
CROSSREFS
| Cf. A118455, A002110, A034386.
Sequence in context: A058254 A076244 A058255 * A013202 A004400 A005831
Adjacent sequences: A118453 A118454 A118455 * A118457 A118458 A118459
|
|
|
KEYWORD
| easy,nonn
|
|
|
AUTHOR
| Leroy Quet Apr 28 2006
|
|
|
EXTENSIONS
| More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu) and Jonathan Vos Post (jvospost3(AT)gmail.com), Apr 29 2006
|
| |
|
|
