66375

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, 1, -1), (1, -1, 0), (1, -1, 1), (1, 1, 1)}.at n=9A149569
• Numbers k such that there are 10 digits in k^2 and for each factor f of 10 (1, 2, 5) the sum of digit groupings of size f is a square.at n=28A153748
• Numbers that divide the concatenation of their aliquot divisors, in ascending order.at n=12A240265
• Numbers k such that k = x + y, k' = x' + y' and k'' = x'' + y'', where k' and k'' are the first and second arithmetic derivatives of k.at n=16A293252
• Expansion of (theta_3(x) - 1)^5 / (16 * (3 - theta_3(x))).at n=29A347808