54868

Appears in sequences

• n^3*a(n) is the number of circles in complex projective plane tangent to three smooth curves of degree n in general position.at n=36A030653
• Numbers k such that 5*2^k + 3 is prime.at n=54A058586
• 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, 1), (-1, 1, 0), (1, -1, 1), (1, 0, 1), (1, 1, -1)}.at n=9A149052
• Number of nX2 1..4 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in increasing order.at n=11A166815
• Number of idempotent 4X4 0..n matrices of rank 3.at n=17A224335
• Number of (n+1)X(3+1) 0..3 arrays with no element unequal to a strict majority of its horizontal and antidiagonal neighbors, with values 0..3 introduced in row major order.at n=4A231446
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with no element unequal to a strict majority of its horizontal and antidiagonal neighbors, with values 0..3 introduced in row major order.at n=25A231451
• Number of (5+1)X(n+1) 0..3 arrays with no element unequal to a strict majority of its horizontal and antidiagonal neighbors, with values 0..3 introduced in row major order.at n=2A231455