18740

Appears in sequences

• a(n) = n*a(n-1) + 1, a(0) = 2.at n=7A038159
• Numbers having four 4's in base 8.at n=24A043440
• Number of partitions of n into distinct parts with 2 levels of parentheses.at n=16A050343
• Pseudo-random numbers: gcc 2.6.3 version for 32-bit integers.at n=8A084276
• Number of partitions of the n-th decimal palindrome into distinct decimal palindromes.at n=43A091585
• Nonnegative values x of solutions (x, y) to the Diophantine equation x^2+(x+937)^2 = y^2.at n=6A129974
• Number of 4-step one space leftwards or up, two space rightwards or down asymmetric rook's tours on an n X n board summed over all starting positions.at n=19A187299
• Number of 3 X 3 X 3 triangular 0..n arrays with every horizontal row nondecreasing and having the same average value.at n=28A214907
• Number of (n+1) X (6+1) 0..1 arrays with every 2 X 2 subblock diagonal minus antidiagonal sum nondecreasing horizontally and vertically.at n=11A253157
• Expansion of Sum_{0<i<j<k<l<m} q^(2*(i+j+k+l+m)-5)/( (1-q^(2*i-1))*(1-q^(2*j-1))*(1-q^(2*k-1))*(1-q^(2*l-1))*(1-q^(2*m-1)) )^2.at n=25A365667
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where T(n,k) = n! * (1 + Sum_{j=0..n} j^k/j!).at n=35A368759