47966

Appears in sequences

• Numerators of continued fraction convergents to sqrt(979).at n=7A042894
• Number of planar n X n X n binary triangular grids with mirror symmetry about one altitude with no more than 1 one in any 2 X 2 X 2 subtriangle.at n=10A153897
• a(0)=0, a(1)=6, a(n)=a(n-1)+a(n-2)-1.at n=21A187892