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 A180267 Prime(2*n+1)!/(60*prime(2*n-1)!). 1
 1, 5544, 148512, 1211364, 5301223200, 67804092195840, 128850876, 8937268342895692800, 4383026968320, 2042765424, 147107459292393600, 40633707301699873935974400, 17158084020, 24300280368 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Oscillating sequence LINKS Harvey P. Dale, Table of n, a(n) for n = 1..1000 EXAMPLE a(3)=prime(7)!/prime(5)!/60=355687428096000/39916800/60=148512 MATHEMATICA #[[2]]/(60*#[[1]])&/@Partition[Prime[Range[1, 31, 2]]!, 2, 1] (* Harvey P. Dale, Mar 05 2017 *) PROG (PARI) a(n)=prime(2*n+1)!/prime(2*n-1)!/60 CROSSREFS Cf. A178614 Sequence in context: A278012 A255100 A031795 * A203336 A045104 A043512 Adjacent sequences: A180264 A180265 A180266 * A180268 A180269 A180270 KEYWORD easy,nonn AUTHOR Graziano Aglietti (mg5055(AT)mclink.it), Aug 23 2010 STATUS approved

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Last modified March 28 17:09 EDT 2023. Contains 361596 sequences. (Running on oeis4.)