34824

Appears in sequences

• Number of nX3 0..1 arrays with exactly n+3-2 having value 1 and no three 1s forming an isosceles right triangle.at n=11A272953
• a(n) = A273059(4n).at n=33A275916
• Expansion of e.g.f. arcsinh(x)/(1 - x).at n=8A296727
• a(n) = 2*a(n-1) - a(n-2) + a([n/2]), where a(0) = 1, a(1) = 1, a(2) = 1.at n=36A298414
• a(n) = 2*(4 + 17*2^(n-1)).at n=11A381791