81124

Appears in sequences

• Upper Beatty array of sqrt(2).at n=45A182638
• Number of 5-step one space for components leftwards or up, two space for components rightwards or down asymmetric quasi-queen's tours (antidiagonal moves become knight moves) on an n X n board summed over all starting positions.at n=7A187860
• Number of 2 X 2 matrices having all terms in {-n,...,0,..,n} and determinant >= 3n.at n=10A211153
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(0) + b(1) + ... + b(n-1), where a(0) = 1, a(1) = 2, b(0) = 3, and (a(n)) and (b(n)) are increasing complementary sequences.at n=18A295053
• a(n) = 54*n^2 - 26*n + 4 (n>=1).at n=38A304381