28704

Appears in sequences

• Number of monic irreducible polynomials of degree n in GF(3)[x,y,z].at n=2A115462
• Number of monic irreducible polynomials of degree 2 in GF(3)[x1,...,xn].at n=2A115477
• Second differences of even superperfect numbers A061652, divided by 2.at n=3A139237
• 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), (0, 0, -1), (0, 1, 0), (1, 0, 1), (1, 1, -1)}.at n=8A150224
• 1/4 the number of (n+1) X 4 0..2 arrays with every 2 X 2 subblock having distinct edge sums.at n=9A209377
• G.f. satisfies: A(x) = theta_3( x*A(x) )^2, where theta_3(x) is Jacobi's theta_3 function.at n=6A212326
• T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without 2-loops or left turns.at n=57A221787
• Number of 3 X n arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without 2-loops or left turns.at n=8A221788
• Number of length n 1..(1+1) arrays with every leading partial sum divisible by 2, 3 or 5.at n=34A254820
• Number of length-n binary sequences where the sum of each subblock differs by at most 2 from every other subblock of the same length.at n=17A274005
• a(n) = 54*n^2 + 6*n.at n=23A277990
• Indices of 0 in A348295: numbers m such that Sum_{k=1..m} (-1)^(floor(k*(sqrt(2)-1))) = Sum_{k=1..m} (-1)^A097508(k) = 0.at n=47A348299