-3654

Appears in sequences

• Row sums of number triangle related to the Jacobsthal numbers.at n=43A110325
• a(n) = Sum_{k=0..n} (-1)^k * binomial(n,k^2).at n=15A307093
• a(n) = coefficient of x^n*y^n in Product_{n>=1} (1 - (x^n + y^n))^3.at n=20A322214
• Irregular triangular array read by rows: row n shows the coefficients of this polynomial of degree n: (1/n!)*(numerator of n-th derivative of (1+x)/(x^2-3x+1)).at n=49A328647