84581

Appears in sequences

• Expansion of x/(1 - 6*x - 5*x^2).at n=7A015551
• a(n) = (1/s(1) + 1/s(2) + ... + 1/s(n+1)) * LCM{1, 2, ..., n}, where s(k) = LCM{1,2,...,k}/k = A002944(k).at n=12A025537
• Denominators of continued fraction convergents to sqrt(501).at n=12A041957
• Number of n X n 0..1 arrays with every element equal to 0, 1, 2 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=5A302409
• Number of nX6 0..1 arrays with every element equal to 0, 1, 2 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=5A302413
• Number of 6Xn 0..1 arrays with every element equal to 0, 1, 2 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=5A302419