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%I
%S 1,1,2,5,6,2,4,5,6,6,4,2,4,4,0,5,6,6,4,6,4,4,0,2,4,4,0,4,0,0,0,5,6,6,
%T 4,6,4,4,0,6,4,4,0,4,0,0,0,2,4,4,0,4,0,0,0,4,0,0,0,0,0,0,0,5,6,6,4,6,
%U 4,4,0,6,4,4,0,4,0,0,0,6,4,4,0,4,0,0,0,4,0,0,0,0,0,0,0,2,4,4,0,4,0,0,0,4,0
%N Catalan numbers read modulo 8 .
%F a(n)= A000108(n) mod 8 .
%F a(n) = A159981(n) (mod 4). [From _R. J. Mathar_, Apr 30 2009]
%p A000108 := proc(n) binomial(2*n,n)/(n+1) ; end: A159987 := proc(n) A000108(n) mod 8 ; end: seq(A159987(n),n=0..120) ; [From _R. J. Mathar_, Apr 30 2009]
%K easy,nonn
%O 0,3
%A _Philippe DELEHAM_, Apr 28 2009
%E Extended by _R. J. Mathar_, Apr 30 2009
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