68745

Appears in sequences

• 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), (-1, -1, 1), (0, 1, -1), (0, 1, 1), (1, 0, 0)}.at n=9A150013
• Number of nX5 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 0 0 vertically.at n=5A207497
• T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 0 0 vertically.at n=50A207500
• Number of 6Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 0 0 vertically.at n=4A207503
• Number of pairs of intersecting diagonals in the interior and exterior of a regular n-gon.at n=27A211380
• Number of compositions of n where the difference between largest and smallest parts equals eight.at n=15A323125
• a(n) = 1 + Sum_{k=0..n} (2*k - 1)*A349976(n, k).at n=12A349974