44442

Appears in sequences

• Numbers having four 4's in base 10.at n=18A043508
• Number of ways to place zero or more nonadjacent 1,1 2,1 3,0 3,1 4,2 polyhexes in any orientation on a planar nXnXn triangular grid.at n=7A155239
• a(n) = number of 7-digit primes with digit sum n, where n runs through the non-multiples of 3 in the range [2..62].at n=19A178876
• G.f. = b(4)*b(6)/(x^8+x^6-x^5-x^3+x^2-2*x+1), where b(k) = (1-x^k)/(1-x).at n=16A266371
• Numbers n such that n * (x-1)/x produces a rotation of the digits in n for some value of x.at n=31A288626
• Number of unlabeled binary rooted semi-identity plane trees with 2*n - 1 nodes.at n=11A343663