550368

Appears in sequences

• Number of ways of writing n as a sum of 8 squares.at n=34A000143
• Theta series of D_8 lattice.at n=17A008430
• a(n) = n^2*(n-1)*(n-2).at n=26A047929
• Least k such that Sum_{i=1..k} gcd(k,i) = n * sigma(k).at n=14A072108
• 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, 1), (0, 1, -1), (1, -1, -1), (1, 1, 0)}.at n=12A148687
• a(n) = numerator(b(n)), where b(0) = b(1) = 1 and b(n) = n*b(n-1)/b(n-2) for n >= 1.at n=33A329654
• Numbers k such that k divides sigma(A003961(k)), where A003961 is fully multiplicative with a(p) = nextprime(p), and sigma is the sum of divisors function.at n=48A389469