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A053710
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Value of prime balanced factorials: n! is the mean of its 2 closest neighboring primes.
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4
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OFFSET
| 1,1
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FORMULA
| n! = (p+q)/2; p=n!+d, q=n!-d, p and q are the closest primes to n!
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EXAMPLE
| for n=21, n!=51090942171709440000, d=31 and the closest primes to 21! are q=21!-31=51090942171709439969, p=21!+31=51090942171709440031
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CROSSREFS
| A033393, A033392, A006990, A037151, A006562, A053709.
Sequence in context: A040996 A110442 A137149 * A126244 A138572 A078261
Adjacent sequences: A053707 A053708 A053709 * A053711 A053712 A053713
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KEYWORD
| nonn
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AUTHOR
| Labos E. (labos(AT)ana.sote.hu), Feb 10 2000
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EXTENSIONS
| The next two terms are 171! and 190! - Jud McCranie (JudMcCranie(AT)ugaalum.uga.edu), Jul 04 2000
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