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A089539 a(n) is the least semiprime > n!. 5
4, 4, 9, 25, 121, 721, 5041, 40321, 362885, 3628801, 39916803, 479001617, 6227020801, 87178291201, 1307674368007, 20922789888002, 355687428096003, 6402373705728023, 121645100408832001, 2432902008176640001, 51090942171709440011, 1124000727777607680029, 25852016738884976640003 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
FORMULA
a(n) = n! + A085747(n).
CROSSREFS
Sequence in context: A334009 A069549 A118069 * A324010 A117416 A174943
KEYWORD
nonn
AUTHOR
Ray Chandler, Nov 09 2003
EXTENSIONS
Better name, more terms from Jinyuan Wang, Jul 31 2021
STATUS
approved

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Last modified March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)