-10946

Appears in sequences

• a(n) = a(n-1)+a(n-2), n>1 ; a(0)=1, a(1)=-1.at n=23A152163
• Hankel transform of A157143.at n=28A157144
• a(n+4) = a(n+3) - 2*a(n+2) - a(n+1) - a(n), starting with (0, 1, 0, -2).at n=21A173344