57374296

Appears in sequences

• Expansion of 1/((1+x)^7 - x^7).at n=23A049018
• a(n) = 7*a(n-1) - 14*a(n-2) + 7*a(n-3), a(0)=0, a(1)=1, a(2)=5.at n=14A215008