57588

Appears in sequences

• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, 0), (-1, 1, 0), (0, 0, 1), (1, 1, -1)}.at n=11A148438
• a(n) = 144*n^2 - 12.at n=19A158543
• Number of compositions of n with c(1) = 1, c(i+1) - c(i) <= 1, and c(i+1) - c(i) != 0.at n=41A238870
• Discriminants of totally real cubic fields with 3 associated nonconjugate fields.at n=6A329787
• Triangle read by rows: T(n,k) (1 <= k <= n) = number of ways to choose three points from an n X k grid of points which are the vertices of a triangle of nonzero area.at n=43A334705
• a(0) = 0. a(n) = the second smallest number greater than a(n-1) that cannot be written as a sum of any previous distinct terms.at n=19A343328