64440

Appears in sequences

• Number of n X n arrays of squares of integers with every 3X3 subblock summing to 7.at n=3A159207
• Number of n X n arrays of squares of integers with every (n-3)X(n-3) subblock summing to 7.at n=1A159370
• Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and 2w^2>x^2+y^2.at n=26A211632
• Smallest number k such that prime(n) divides the n-th divisor of k.at n=39A226101
• Numbers k such that k and k+1 have the same binary XOR of divisors.at n=41A227443
• a(n) = [x^n] Product_{k=1..n} (1+x^k)^3 / x^k.at n=7A258798
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of e.g.f.: Product_{j>0} 1/(1-j^k*x^j)^(1/j).at n=50A294761
• Number of regions formed when every pair of vertices of a regular n-gon are joined by an infinite line.at n=29A345025
• Denominator of the limiting density of residues attained by the Fibonacci sequence modulo powers of the n-th prime.at n=40A351000
• Long legs of the only primitive Pythagorean triple whose inradius is the n-th prime and whose short leg is an odd number.at n=40A367573