|
Search: id:A057588
|
|
|
| A057588 |
|
Kummer numbers: -1 + product of first n consecutive primes. |
|
+0
10
|
|
| 1, 5, 29, 209, 2309, 30029, 510509, 9699689, 223092869, 6469693229, 200560490129, 7420738134809, 304250263527209, 13082761331670029, 614889782588491409, 32589158477190044729, 1922760350154212639069
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
LINKS
|
T. D. Noe, Table of n, a(n) for n=1..100
Hisanori Mishima, Factorizations of many number sequences
R. G. Wilson v, Explicit factorizations
|
|
MATHEMATICA
|
Table[Product[Prime[k], {k, 1, n}] - 1, {n, 1, 18}] - Artur Jasinski (grafix(AT)csl.pl), Jan 01 2007
|
|
CROSSREFS
|
Cf. A002110, A006862.
Sequence in context: A004213 A105277 A103213 this_sequence A030522 A091124 A121143
Adjacent sequences: A057585 A057586 A057587 this_sequence A057589 A057590 A057591
|
|
KEYWORD
|
nonn,easy,nice
|
|
AUTHOR
|
Mario Velucchi (mathchess(AT)velucchi.it), Oct 05 2000
|
|
EXTENSIONS
|
More terms from Larry Reeves (larryr(AT)acm.org), Oct 05 2000
|
|
|
Search completed in 0.002 seconds
|
