0,2

Gf(x) = x*(4+21*x-13*x^2+x^3+3*x^4-x^5)/(1-x)^7

a(n) = (10*n^2+107*n^3+61*n^4+13*n^5+n^6)/48

a(n) = 7*a(n-1)-21*a(n-2)+35*a(n-3)-35*a(n-4)+21*a(n-5)-7*a(n-6)+a(n-7)

Cf. A163972.

Equals the fourth left hand column of A163940.

A163943 is another left hand column.

Sequence in context: A166838 A166826 A100256 this_sequence A000596 A113525 A064751

Adjacent sequences: A163941 A163942 A163943 this_sequence A163945 A163946 A163947

easy,nonn

Johannes W. Meijer (meijgia(AT)hotmail.com), Aug 13 2009