2008307

Appears in sequences

• Expansion of ( 1-x ) / ( 1-x-3*x^2+x^3 ).at n=20A052973
• a(n) is the square of the n-th partial sum minus the n-th partial sum of the squares, divided by a(n-1), for all n>=1, starting with a(0)=1, a(1)=3.at n=19A087956
• Expansion of g.f. (1-6*x+7*x^2)/(1-7*x+11*x^2-x^3).at n=11A216949