

A084543


a(2,n) as defined in A003148.


3



3, 9, 69, 531, 6147, 73665, 1143045, 18456795, 359420355, 7279744185, 170639259525, 4151789871075, 113815089771075, 3231091019581425
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OFFSET

0,1


LINKS

Table of n, a(n) for n=0..13.


FORMULA

Conjecture: a(n) + 3*a(n1)  2*(2*n+3)*(n1)*a(n2) = 0.  R. J. Mathar, Mar 12 2013


MAPLE

A003148 := proc(m::integer, n::integer) RETURN( doublefactorial(2*n+2*m+1)/(2*m+1)*simplify(hypergeom([ n, m+1/2], [m+3/2], 2))) ; end:
A084543 := proc(n::integer) RETURN(A003148(2, n)) ; end:
for n from 0 to 20 do print(A084543(n)); od: # R. J. Mathar, Apr 25 2006


CROSSREFS

Sequence in context: A026090 A119751 A276475 * A318030 A018564 A004167
Adjacent sequences: A084540 A084541 A084542 * A084544 A084545 A084546


KEYWORD

sign


AUTHOR

R. J. Mathar, Jul 01 2003


EXTENSIONS

More terms from R. J. Mathar, Apr 25 2006


STATUS

approved



