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A109243 2^(n-1)J(n,1/2) where J(n,x)=nth Jacobsthal polynomial. 0
0, 1, 2, 6, 32, 28, 248, 120, 1504, 496, 8096, 2016, 40704, 8128, 195968, 32640, 915968, 130816, 4190720, 523776, 18866176, 2096128, 83867648, 8386560, 369057792, 33550336, 1610522624, 134209536, 6979125248, 536854528 (list; graph; refs; listen; history; internal format)
OFFSET

0,3

COMMENTS

a(2n+1)=A006516(n+1).

FORMULA

G.f.: x(1+2x-6x^2+8x^3+8x^4-32x^5)/((1-2x^2)(1-4x^2)(1-6x^2+8x^4)); a(n)=12a(n-2)-52a(n-4)+96a(n-6)-64a(n-8).

CROSSREFS

Sequence in context: A003087 A203901 A190958 * A108327 A196010 A121071

Adjacent sequences:  A109240 A109241 A109242 * A109244 A109245 A109246

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Jun 23 2005

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Last modified February 16 15:27 EST 2012. Contains 205930 sequences.