111200

Appears in sequences

• Expansion of F(x) where F(x) = 1 + x / (1 - x * F(x) * F(+x^2) ).at n=14A238427
• Row sums of A285117: a(n) = 2 + Sum_{k=1..(n-1)} C(n-1,k-1) XOR C(n-1,k), a(0) = 1, a(1) = 2.at n=18A285114
• Wiener index of the n X n fiveleaper graph.at n=8A292040
• a(n) = [x^n] Product_{k>=1} 1/(1 - n*x^prime(k)).at n=10A302837
• Ternary numbers consisting of a run of 1's, then a run of 2's, then a run of 0's.at n=11A371051
• Ternary numbers that are concatenated runs A(1)C(1)B(1)A(2)C(2)B(2)...A(k)C(k)B(k), where A(i) is a run of 1's, B(i) a run of 0's, and C(i) a run of 2's, for i = 1..k.at n=11A371107