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Search: id:A035272
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A035272 One third of deca-factorial numbers. +0
5
1, 13, 299, 9867, 424281, 22486893, 1416674259, 103417220907, 8583629335281, 798277528181133, 82222585402656699, 9291152150500206987, 1142811714511525459401, 151993958030032886100333 (list; graph; listen)
OFFSET

1,2

LINKS

Index entries for sequences related to factorial numbers

FORMULA

3*a(n) = (10*n-7)(!^10) := product(10*j-7, j=1..n); E.g.f. (-1+(1-10*x)^(-3/10))/3.

CROSSREFS

Cf. A045757.

Sequence in context: A064750 A023357 A076130 this_sequence A009119 A142425 A119131

Adjacent sequences: A035269 A035270 A035271 this_sequence A035273 A035274 A035275

KEYWORD

easy,nonn

AUTHOR

Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de)

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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