243618

Appears in sequences

• Main diagonal of triangle A131823: a(n) = A131823(n,n) for n>=0.at n=11A131824
• Number of length 4+3 0..n arrays with every four consecutive terms having the sum of some three elements equal to three times the fourth.at n=28A248541
• G.f. A(x) satisfies (4*A(x^9)/A(x) - 1)^3 = 28*A(x^3)^4/A(x)^4 - 1 + 4*x.at n=6A376526