73609

Properties

Appears in sequences

• Number of (n+1) X (n+1) -4..4 symmetric matrices with every 2 X 2 subblock having sum zero and one or three distinct values.at n=11A211492
• Expansion of Product_{i>=1, j>=1} 1 / (1 - x^(i*j*(j + 1)/2)).at n=34A327744
• Prime numbersat n=7269