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A064320 Product{j=1,2,...,n} [j^C(n-1,j-1)]. 3
1, 2, 12, 864, 14929920, 37150418534400000, 10063619980174622195712000000000000000, 664903611914043473202543232567979684173499596800000000000000000000000000000000000 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

Product variant of binomial transform of natural numbers.

From Benoit Cloitre, Jan 29 2002: array interpretation (first row and column are the natural numbers):

1 2 3 4 .....

2 2 6 12 ....

3 4 12 72 ...

.......864...

FORMULA

Main diagonal of array T(i, 1)=i, T(1, j)=j and T(i, j)=T(i-1, j)*T(i, j-1). - Benoit Cloitre (benoit7848c(AT)orange.fr), Aug 16 2003

EXAMPLE

a(5) =(1^1)*(2^4)*(3^6)*(4^4)*(5^1) =1*16*729*256*5 =14929920

CROSSREFS

Cf. A001792. Equals A064319(n, n).

Sequence in context: A061149 A191555 A129933 * A112373 A058975 A057120

Adjacent sequences:  A064317 A064318 A064319 * A064321 A064322 A064323

KEYWORD

nonn

AUTHOR

Henry Bottomley (se16(AT)btinternet.com), Sep 10 2001

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Last modified February 17 13:28 EST 2012. Contains 206031 sequences.