410040

Appears in sequences

• a(n) = n*(n-1)*(n-2)*(n-3)*(n^2-3*n-2)/48.at n=18A093566
• Expansion of 2*(x+1)^2/((x^2+4*x+1)*(x^2-2*x-1)).at n=9A111643
• Non-palindromes whose squares are in A066531.at n=25A206642