15728640

Appears in sequences

• Product of nonzero digits of A066555(n).at n=17A066585
• a(0) = 1, a(n) = (n + 4)*4^(n-1) for n >= 1.at n=11A079028
• Duplicate of A079028.at n=11A081104
• a(n) = n^6 - n^5.at n=16A085539
• Number of subsets of {1,.., n} containing at least one square.at n=23A089888
• Expansion of g.f. (1-x)/(1-16*x).at n=6A090411
• a(n) is the least k with n prime factors (counting multiplicity) such that the sum of these n factors divides k. First member of A036844 with n prime factors.at n=21A104465
• a(n) = 15*2^n.at n=20A110286
• First differences of A109975.at n=22A111297
• a(n) = floor(2^(n-2)*3*n).at n=19A128543
• a(n) = n*(n-1)*2^n.at n=16A128796
• a(n) = 4 * A051189(n).at n=5A153511
• Number of defective 3-colorings of an n X 2 0..2 array connected diagonally and antidiagonally with exactly one mistake, and colors introduced in row-major 0..2 order.at n=10A229504
• a(n) = 6*(n - 3)*(n - 4)*2^(n-3)*n^(n-4).at n=5A232994
• Numbers of the form 4^k*(8*j+7) that have exactly three partitions into four positive squares.at n=31A274642
• Denominators of coefficients in the asymptotic expansion of the logarithm of the central binomial coefficient.at n=7A275995
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 294", based on the 5-celled von Neumann neighborhood.at n=23A287506
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 326", based on the 5-celled von Neumann neighborhood.at n=26A287713
• a(n) = phi(3^n-1), where phi is Euler's totient function (A000010).at n=15A295500
• a(n) = Product_{d|n} lcm(tau(d), pod(d)) where tau(k) is the number of divisors of k (A000005) and pod(k) is the product of divisors of k (A007955).at n=15A334807