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A160179 a(1)=2. a(n) equals the product of the previous terms divided by the (n-1)st prime gap. 0
2, 2, 2, 4, 8, 128, 8192, 134217728, 9007199254740992 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Start with a(1)=2. Build a(n) as the product of all preceding terms divided by the n-minus-first prime gap. The sequence is limited to 9 terms because the 10th term is no longer an integer.
LINKS
FORMULA
a(1) =2. a(n) = product_{i=1..n-1} a(i) / A001223(n-1), n>1.
EXAMPLE
a(8) = 2*2*2*4*8*128*8192/2 = 134217728.
CROSSREFS
Sequence in context: A262568 A183388 A274076 * A021822 A153986 A199889
KEYWORD
nonn,fini,full
AUTHOR
Valle Rogers (Vallerogers(AT)hotmail.com), May 03 2009
EXTENSIONS
Edited by R. J. Mathar, May 16 2009
STATUS
approved

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Last modified March 1 08:00 EST 2024. Contains 370430 sequences. (Running on oeis4.)