853467

Appears in sequences

• Motzkin numbers: number of ways of drawing any number of nonintersecting chords joining n (labeled) points on a circle.at n=16A001006
• A bisection of the Motzkin numbers A001006.at n=8A026945
• Expansion of (1 + x - sqrt(1 - 2*x - 3*x^2)) / 2 in powers of x.at n=18A086246
• Odd Motzkin numbers.at n=10A134717
• Sum of all n-digit terms of A005043.at n=5A135326
• A signed variant of the Motzkin numbers.at n=17A166587
• Expansion of (3 -x -sqrt(1-2*x-3*x^2))/2.at n=18A168049
• A permutation of Motzkin numbers by reversal of indices in blocks of length 7.at n=19A180352