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A062798
Inverse Moebius transform of central binomial coefficients f[x]=C(c,[x/2])=A001405[x].
0
1, 3, 4, 9, 11, 26, 36, 79, 130, 265, 463, 956, 1717, 3470, 6449, 12949, 24311, 48772, 92379, 185027, 352755, 705897, 1352079, 2705182, 5200311, 10402319, 20058430, 40120076, 77558761, 155124243, 300540196, 601093339, 1166803576, 2333630533
OFFSET
0,2
FORMULA
a(n)=Sum{C(d, [d/2])}, d|n and C(d, [d/2])=A001405[d].
EXAMPLE
n=9, divisors={1,3,9} a(9)=C[1,0]+C[3,1]+C[9,4]=1+3+126=130
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, Jul 19 2001
STATUS
approved