23768

Appears in sequences

• Triangle of coefficients of polynomials u(n,x) jointly generated with A208932; see the Formula section.at n=51A208931
• a(n) = floor(sqrt(2*7^n)).at n=10A221946
• Number of (n+1) X (3+1) 0..3 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4 (constant-stress 1 X 1 tilings).at n=11A235284
• a(n) is the number of equivalence classes of simple, open polygonal chains consisting of two segments and with all three vertices on the lattice points of an n X n grid.at n=14A272053
• Starts of runs of 4 consecutive positive negabinary-Niven numbers (A331728).at n=6A331824