22671

Appears in sequences

• a(n) = Sum_{j=0..n} Sum_{i=0..n} T(j,i), T given by A026736.at n=13A026745
• Sum of the vertical heights (i.e., number of rows) of all deco polyominoes of height n.at n=6A121694
• 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=8A150208
• Numbers k such that 6*prime(k) -+ {1,5} are all prime.at n=30A174393