135729

Appears in sequences

• a(0)=a(1)=a(2)=a(3)=a(4)=a(5)=1; a(n)=a(n-1)+a(n-2)-a(n-4)+a(n-6) for n>=6.at n=33A109537
• a(1) = 1; for n>1, a(n) = (c(n) + c(n+1))/2, where c(n) = A130168(n).at n=6A130169
• Regular triangle T(n,k) of Dellac configurations with boundaries, n>=1 and k>=0.at n=26A343198