65870

Appears in sequences

• Expansion of (1-x)^(-1)/(1+x-2*x^2-x^3).at n=20A077897
• Riordan array (1/(1+3x+2x^2),x/(1+3x+2x^2)).at n=59A111806
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (0, 0, 1), (0, 1, -1), (1, 0, 0), (1, 1, -1)}.at n=9A150101
• Number of nX3 0..1 arrays with every element equal to 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.at n=24A298095