21068

Appears in sequences

• Number of (n+1) X 4 binary arrays with each element of every 2 X 2 subblock being the sum mod 2 of two others.at n=3A183839
• Number of (n+1)X5 binary arrays with each element of every 2X2 subblock being the sum mod 2 of two others.at n=2A183840
• T(n,k)=Number of (n+1)X(k+1) binary arrays with each element of every 2X2 subblock being the sum mod 2 of two others.at n=17A183845
• T(n,k)=Number of (n+1)X(k+1) binary arrays with each element of every 2X2 subblock being the sum mod 2 of two others.at n=18A183845
• Irregular array T(n,k) of the numbers of non-extendable (complete) non-self-adjacent simple paths ending at each of a minimal subset of nodes within a square lattice bounded by rectangles with nodal dimensions n and 6, n >= 2.at n=36A213070
• Irregular array T(n,k) of the numbers of non-extendable (complete) non-self-adjacent simple paths ending at each of a minimal subset of nodes within a square lattice bounded by rectangles with nodal dimensions n and 7, n >= 2.at n=33A214373
• Number of (n+3) X 8 0..2 matrices with each 4 X 4 subblock idempotent.at n=10A224725
• Number of (n+2)X(4+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 or 00000101.at n=19A259768
• Numbers n such that Bernoulli number B_{n} has denominator 1410.at n=26A272369
• p-INVERT of (1,0,0,1,0,0,1,0,0,...), where p(S) = (1 - S)^2.at n=21A289919
• Numbers x such that there exist three integers 0<x<=y, z>0 and w>0 such that sigma(x)^3 = sigma(y)^3 = x^3 + y^3 + z^3 + w^3.at n=31A385397