143276

Appears in sequences

• G.f.: (21+98*x+91*x^2+21*x^3+x^4)/(1-x)^5.at n=10A160768
• Number of n X 2 0..1 arrays with no element equal to more than two of its horizontal, diagonal or antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.at n=9A281394
• Sum of numbers of ways to choose a k-chain of divisors of n - k, for k = 0..n - 1.at n=43A343940