139638

Appears in sequences

• Expansion of 1/(1-x-x^2+2*x^3).at n=47A077948
• Number of n X 7 0..1 arrays with rows unimodal and antidiagonals nondecreasing.at n=5A224408
• Number of 6Xn 0..1 arrays with rows unimodal and antidiagonals nondecreasing.at n=6A224413
• On a spirally numbered square grid, with labels starting at 0, this is the number of the final step that a (1,n) leaper makes before getting trapped, or -1 if it never gets trapped.at n=20A323470
• Number of nonnegative lattice paths from (0,0) to (n,0) where the allowed steps at (x,y) are (h,v) with h in {1..max(1,y)} and v in {-1,0,1}.at n=13A337067