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A033324 [ 4/n ]. 13
4, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..92.

FORMULA

a(n)=4*[C(2*i,i) mod 2]+2*{C[(i+1)^2,i+3] mod 2}+[C(i^2,i+2) mod 2]+{C[(i+11)^4,i+13] mod 2} - Paolo P. Lava, Jan 07 2008

CROSSREFS

Sequence in context: A265435 A277004 A113092 * A266145 A266144 A016508

Adjacent sequences:  A033321 A033322 A033323 * A033325 A033326 A033327

KEYWORD

easy,nonn

AUTHOR

Jeff Burch

STATUS

approved

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Last modified March 3 04:02 EST 2021. Contains 341756 sequences. (Running on oeis4.)