985263601

Appears in sequences

• Expansion of 1/((1-9x)(1-11x)).at n=8A016190
• For n even a(n) = a(n-1) + 10*a(n-2), for n odd a(n) = a(n-3) + 10 a(n-2); with a(1) = 0, a(2) = 1.at n=18A161999
• a(n) = ((n+1)^(n-1) - (n-1)^(n-1))/2 for n>=1.at n=10A274278