33509

Appears in sequences

• a(n) = [ 3rd elementary symmetric function of {log(k)} ], k = 2,3,...,n.at n=22A025203
• Least k such that decimal representation of k*n contains only digits 0 and 7.at n=22A096686
• The number of order-decreasing partial isometries (of an n-chain).at n=14A184052
• G.f. A(x) satisfies: Series_Reversion( A(x) + A(x)^2 ) = A(x) - A(x)^2.at n=7A277292
• Number of n X 3 0..1 arrays with no element equal to more than two of its horizontal, diagonal or antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.at n=11A281464
• G.f. A(x) satisfies: A( A( x - x^2 ) ) = x + x^2.at n=14A318008
• Number of ways to split a strict integer partition of n into consecutive subsequences with weakly decreasing sums.at n=46A319794
• Semiprimes k such that k+4, k+6, k+9, k+10 and k+14 are also semiprimes.at n=9A360666
• Number of ways that n can be expressed as a sum of consecutive integers from 0 up to at most n, where any of the terms in the sum can be negated, and the partial sum from 0 is always between 0 and n inclusive.at n=60A364721
• Numbers k such that k + 4, k + 6, k + 9, k + 10, and k + 14 are all semiprimes, where 4, 6, 9, 10, 14 are the first 5 semiprimes.at n=26A365240