89402

Appears in sequences

• Number of unlabeled connected simple graphs with n nodes of degree 4 or less.at n=10A121941
• Expansion of (2/(3*sqrt(1-4*z)-1+4*z))*((1-sqrt(1-4*z))/(2*z))^k with k=4.at n=8A172061
• Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of the symmetric matrix A202674 based on (1,3,5,7,9,...); by antidiagonals.at n=31A202675
• Number of 4 X n 0..1 arrays with rows unimodal and columns nondecreasing.at n=11A225011