53105

Appears in sequences

• a(n) = a(n-1)^2 - a(n-2)^2.at n=6A001042
• Row 3 of array in A047666.at n=42A047667
• Monotonic ordering of set S generated by these rules: if x and y are in S and x^2-y^2>0 then x^2-y^2 is in S, and 2 and 3 are in S.at n=27A192648
• Nodes of tree generated as follows: (1,2) is an edge, and if (x,y) is an edge, then (y, y^2 - x^2) and (y, y^2 + x^2) are edges.at n=23A228940
• Number of length 5 0..n arrays with each partial sum starting from the beginning no more than two standard deviations from its mean.at n=7A244836
• Number of length 1+4 0..n arrays with every five consecutive terms having four times some element equal to the sum of the remaining four.at n=13A249657
• Irregular triangle read by rows: T(n,k) is the coefficient of x^k in the domination polynomial of the n X n torus grid graph (n>=1, A094087(n)<=k<=n^2).at n=39A378418