-5778

Appears in sequences

• Expansion of (1-2*x)/(1+x-x^2).at n=17A075193
• Sum of Lucas numbers and inverted Lucas numbers: a(n) = A000032(n)*A075193(n).at n=19A075270
• Riordan array ((1-x^2)/(1+3x+x^2),x/(1+3x+x^2)).at n=45A110168
• Alternating row sums of Riordan triangle A110162.at n=9A219233