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A370971 A008336(n) is divisible by the product of the primes p such that n/2 <= p < n; a(n) is the quotient. 1
1, 1, 1, 1, 8, 8, 4, 4, 32, 288, 144, 144, 12, 12, 6, 90, 1440, 1440, 80, 80, 4, 84, 42, 42, 1008, 25200, 12600, 340200, 12150, 12150, 405, 405, 12960, 427680, 213840, 7484400, 207900, 207900, 103950, 4054050, 162162000, 162162000, 3861000, 3861000, 87750, 1950, 975, 975, 46800, 2293200, 45864, 2339064, 44982 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,5
LINKS
FORMULA
a(n) = A008336(n)/A055773(n-1).
EXAMPLE
For n= 7, A008336(7) = 20. The only prime with 3.5 <= p < 7 is 5, so a(7) = 20/5 = 4.
For n= 8, A008336(7) = 140. The only primes with 4 <= p < 8 are 5 and 7, so a(8) = 140/(5*7) = 4.
CROSSREFS
Cf. A008336, A055773 (note that A055773 has offset 0).
Sequence in context: A085669 A154012 A154845 * A126600 A254615 A154841
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Apr 13 2024
STATUS
approved

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Last modified June 13 00:51 EDT 2024. Contains 373362 sequences. (Running on oeis4.)