124531

Appears in sequences

• Expansion of 1/((1-3x)(1-5x)(1-9x)(1-12x)).at n=4A028070
• G.f.: 1/(1-2x-19x^2)^(1/2).at n=8A098264
• Number of 1X8 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 1 zero-sum 8-vectors with total modulus squared not more than 2*n^2, ignoring vector and component permutations).at n=13A192695