1831054687domain: NAppears in sequencesSum_{T(i,j)}, 0<=j<=i, 0<=i<=n, where T is the array in A026386.at n=25A026396a(n) = (3*5^n - 1)/2.at n=13A057651a(n) = Sum_{k=0..n} C(floor((n+1)/2),floor((k+1)/2))*2^k.at n=26A097162Moore lower bound on the order of a (6,g)-cage.at n=24A198306a(n) = 5*a(n-2) + 2, a(0) = 1, a(1) = 2.at n=26A238366