517201

Appears in sequences

• Expansion of (1-x)/(1-x-2x^2+x^4).at n=22A052969
• The (1,4)-entry in the matrix M^n, where M is the 4 X 4 matrix {{0, -1, -1, 1}, {1, -1, 0, 0}, {0, 1, 1, 0}, {0, 0, 1, 1 }}.at n=46A122789