284258

Appears in sequences

• a(n) = 2*Fibonacci(n)^2.at n=14A175395
• Number of 12X2 integer matrices with each row summing to zero, row elements in nondecreasing order, rows in lexicographically nondecreasing order, and the sum of squares of the elements <= 2*n^2 (number of collections of 12 zero-sum 2-vectors with total modulus squared not more than 2*n^2, ignoring vector and component permutations).at n=17A192713
• Coefficient of x in the reduction by (x^2->x+1) of the polynomial p(n,x) given in Comments.at n=14A192873
• a(n) = a(n-1) + a(n-3) + a(n-4), where a(0) = 0, a(1) = 0, a(2) = 0, a(3) = 2.at n=29A295680