80160

Appears in sequences

• a(n) = Sum_{i=1..floor((n+2)/4)} a(2i-1)*a(n-2i+1), with a(1)=a(3)=2 and a(2)=1.at n=14A024959
• Theta series of lattice A_2 tensor D_5 (dimension 10, det. 3888, min. norm 4).at n=11A033697
• Expansion of psi(q^2) / f(-q)^2 in powers of q where psi(), f() are Ramanujan theta functions.at n=22A137829
• 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, 1), (-1, 0, 1), (1, 0, -1), (1, 1, 0), (1, 1, 1)}.at n=8A150962
• Sequence with Hankel transform equal to 2^floor(n^2/2).at n=9A168490
• (n-1)-st elementary symmetric function of the first n terms of (1,2,3,4,5,1,2,3,4,5,...)=A010884.at n=10A203166
• T(n,k)=Number of nXk arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor, with every occupancy equal to zero or two.at n=31A221728
• Number of 4 X n arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor, with every occupancy equal to zero or two.at n=4A221730
• Number of (n+2)X4 0..1 matrices with each 3X3 subblock having the same population.at n=5A224645
• Number of (n+2)X8 0..1 matrices with each 3X3 subblock having the same population.at n=1A224649
• T(n,k)=Number of (n+2)X(k+2) 0..1 matrices with each 3X3 subblock having the same population.at n=22A224651
• T(n,k)=Number of (n+2)X(k+2) 0..1 matrices with each 3X3 subblock having the same population.at n=26A224651
• Number of partitions of n into two sorts of parts having exactly 5 parts of the second sort.at n=13A258475