838860800

Appears in sequences

• Theta series of D*_25 lattice.at n=33A022078
• a(n) = n*2^n.at n=25A036289
• n*bigomega(n)^n, where bigomega(n) is the number of prime divisors of n, counted with multiplicity.at n=24A061452
• Expansion of (1 - 4*x + 6*x^2)/(1 - 2*x)^2.at n=26A097064
• Smallest number beginning with 8 and having exactly n prime divisors counted with multiplicity.at n=26A106428
• Number of ternary Lyndon words with exactly three 1's.at n=22A124721
• Denominator of (ordinary) expansion of log((x/2-1)/(x-1)).at n=25A131135
• Row sums of triangle A134400.at n=25A134401
• Egyptian fraction expansion for Pi/4 = arctan(1/2) + arctan(1/3) (Hutton 1776).at n=24A157327
• Number of binary strings of length n with equal numbers of 0001 and 1000 substrings.at n=30A164161
• Numbers expressible as A*B^A in two or more different ways, with A, B > 1.at n=26A171606
• Denominators of expansion of (Sum_{k=1..n} 1/k) - log(n(1+1/(2n))) - gamma.at n=23A189049
• Number of (n+1) X (n+1) 0..2 arrays with every 2 X 2 subblock diagonal maximum minus antidiagonal minimum unequal to its neighbors horizontally, vertically, diagonally and antidiagonally.at n=21A253461
• 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 262", based on the 5-celled von Neumann neighborhood.at n=30A287291
• a(n) = (2n + 1)*2^(2n + 1); numbers k such that v(k)*2^v(k) = k, where v(n) = A007814(n) is 2-adic valuation of n.at n=12A288443
• 30*a(n) - 1 is the least prime of the form 2^r*3^s*5^t - 1, r > 0, s > 0, t > 0, r + s + t = n.at n=27A337881