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A163086 Product of first n terms of A163085. 2
1, 1, 2, 24, 1728, 3732480, 161243136000, 975198486528000000, 412860031256494080000000000, 110116706384632080236544000000000000000, 7401233839469056679744633202278400000000000000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..10.

FORMULA

a(n) = product_{i=0..n}  A056040(i+1)^(n-i). - Peter Luschny, Sep 18 2012

MAPLE

a := proc(n) local i; mul(A163085(i), i=0..n) end;

PROG

(Sage)

def A163086(n):

    swing = lambda n: factorial(n)/factorial(n//2)^2

    return mul(swing(i+1)^(n-i) for i in (0..n))

[A163086(i) for i in (0..10)] # Peter Luschny, Sep 18 2012

CROSSREFS

Cf. A056040, A163085, A055462, A000178.

Sequence in context: A181231 A111427 A081955 * A280922 A053995 A184595

Adjacent sequences:  A163083 A163084 A163085 * A163087 A163088 A163089

KEYWORD

nonn

AUTHOR

Peter Luschny, Jul 21 2009

STATUS

approved

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Last modified April 25 19:05 EDT 2017. Contains 285426 sequences.