80464

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 37 ones.at n=29A031805
• Triangle T(n, k) = coefficients of p(x, n) where p(x,n) = (x+1)*p(x, n-1) + n*(n-1)*x*p(x, n-2), read by rows.at n=39A154986
• Triangle T(n, k) = coefficients of p(x, n) where p(x,n) = (x+1)*p(x, n-1) + n*(n-1)*x*p(x, n-2), read by rows.at n=41A154986
• Number of tilings of a 10 X n rectangle using 2n pentominoes of shape I.at n=20A247117
• E.g.f. A(x) satisfies: A'(x) = 1/(1 - A(A(x)))^2.at n=5A300282
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of sqrt(2 / ( (1-2*(k+4)*x+((k-4)*x)^2) * (1+(k-4)*x+sqrt(1-2*(k+4)*x+((k-4)*x)^2)) )).at n=33A337369
• Expansion of sqrt(2 / ( (1-12*x+4*x^2) * (1-2*x+sqrt(1-12*x+4*x^2)) )).at n=5A337370