References to A001591

Pentanacci numbers: a(n) = a(n-1)+a(n-2)+a(n-3)+a(n-4)+a(n-5), a(0)=a(1)=a(2)=a(3)=0, a(4)=1.
0, 0, 0, 0, 1, 1, 2, 4, 8, 16, 31, 61, 120, 236, 464, 912, 1793, 3525, 6930, 13624

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