28327

Appears in sequences

• Numerators of continued fraction convergents to sqrt(60).at n=8A041104
• Numerators of continued fraction convergents to sqrt(135).at n=12A041246
• Numerators of continued fraction convergents to sqrt(540).at n=6A042032
• Solutions x to the negative Pell equation x^2 - 15*y^2 = -11 with x, y > 0.at n=9A281584
• Number of nX4 0..1 arrays with every element unequal to 0, 1, 2 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=10A318339
• Triangle read by rows: n-th row gives the number of pieces of size 1 X k required to build all free n-ominoes simultaneously, 1 <= k <= n. Long pieces are preferred over short ones.at n=55A364038
• E.g.f. A(x) satisfies A(x) = exp(x * (1+x^3)^2 * A(x)).at n=6A389987
• E.g.f. A(x) satisfies A(x) = exp( x/(1-x^3)^2 * A(x) ).at n=6A390184