44127

Appears in sequences

• Number of n-step spiral self-avoiding walks on hexagonal lattice, where at each step one may continue in same direction or make turn of 2*Pi/3 counterclockwise.at n=40A000511
• Numerator of b(n) where b(n+1) = Sum_{k=0..n} b'((n^2-k^2)/n), b(0) = b(1) = 1, and b'(x) = b(x) if x is an integer and is linearly interpolated otherwise.at n=8A071300
• Numbers k such that k and k^2 use only the digits 1, 2, 4, 7 and 9.at n=17A136998
• Number of Golomb rulers of length n.at n=38A169942
• Numbers k such that (5*10^k - 29)/3 is prime.at n=23A282505
• G.f. A(x) satisfies A(x) = 1/(1-x)^2 + x^2 * (d/dx A(x)^2).at n=6A386209