1703027

Appears in sequences

• Numerators of continued fraction convergents to sqrt(181).at n=15A041334
• Minimal (positive) solution a(n) of Pell equation a(n)^2 - D(n)*b(n)^2 = +4 with D(n)= A077425(n). The companion sequence is b(n)=A078355(n).at n=38A077428
• Column 1 of triangle A128564; a(n) equals the number of permutations of {1..n+2} with [n/2+1] inversions for n>=0.at n=16A128565
• Number of reduced words of length n in the Weyl group A_17.at n=9A161497
• Number of permutations of [2n] with n inversions.at n=9A384368