60698

Appears in sequences

• 2*Jacobsthal(n-1)*Fibonacci(n).at n=11A093045
• Integer part of the area of circles with prime radii.at n=33A097427
• Expansion of (-1+2x+2x^2)/((1+x+x^2)(1-x-x^2)).at n=25A100887
• Number of 5-indecomposable (connected) graphs on n nodes.at n=14A128527
• Expansion of (1/x) * Series_Reversion( x / ((1+x)^2 * (1+x^3)) ).at n=9A369443
• Expansion of 1/( (1 + x) * (1 - x^2*(1 + x)^2) ).at n=26A375372