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A084543 a(2,n) as defined in A003148. 3
3, -9, 69, -531, 6147, -73665, 1143045, -18456795, 359420355, -7279744185, 170639259525, -4151789871075, 113815089771075, -3231091019581425 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

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

FORMULA

Conjecture: a(n) + 3*a(n-1) - 2*(2*n+3)*(n-1)*a(n-2) = 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

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Last modified December 9 03:27 EST 2019. Contains 329872 sequences. (Running on oeis4.)