97230

Appears in sequences

• Pisot sequence L(5,8).at n=18A020736
• a(n) = Sum_{k=0..n-2} T(n,k) * T(n,k+2), with T given by A026670.at n=7A026983
• a(n) = n*(n^3 - 1)/2.at n=19A027482
• Expansion of (2-x-x^2-x^3)/((1-x)*(1-x^2-x^3)).at n=44A052954
• Numbers of the form k*(k^3 +- 1)/2.at n=40A057590
• Expansion of (1-x)^(-1)/(1-x^2+x^3).at n=46A077883
• a(n)=the sum of the (1,2)- and (1,3)-entries of the matrix P^n + T^n, where the 3 X 3 matrices P and T are defined by P=[0,1,0;0,0,1;1,0,0] and T=[0,1,0;0,0,1;1,1,0].at n=43A109524
• a(n) = 2*A000984(n) - (n+1).at n=9A134759
• Sum of every third term of the Padovan sequence A000931.at n=15A329244