47344

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, 0, 0), (-1, 0, 1), (0, 1, -1), (1, -1, 0), (1, 1, 0)}.at n=9A149372
• G.f.: A(x) = exp( Sum_{n>=1} 2^[(n^2+1)/2]*x^n/n ), a power series in x with integer coefficients.at n=6A156335
• Number of 2 X n arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, with every occupancy equal to zero or two.at n=10A221420
• Let s denote the sum of the abundant numbers in the aliquot parts of x. Sequence lists numbers x such that sigma(s) = usigma(x), where usigma(x) is the sum of the unitary divisors of x (A034448).at n=13A258135
• a(n) = 2*(3*n+1)*(9*n+8).at n=29A304506
• Expansion of Sum_{n>=1} q^(n*(n-1)) / (1-q)^n.at n=45A321481
• Number of triangular regions into which a figure made up of a row of n adjacent congruent rectangles is divided upon drawing diagonals of all possible rectangles.at n=26A324042
• Number of multisets of nonempty sets of nonempty multisets of positive integers with total sum n.at n=13A330458