29855

Appears in sequences

• Generalized Stirling numbers, [n+2,n]_2.at n=20A001701
• tan(arctanh(x)-arcsin(x)) = 1/3!*x^3 + 15/5!*x^5 + 495/7!*x^7 + 29855/9!*x^9...at n=4A013432
• Numerators of continued fraction convergents to sqrt(281).at n=8A041528
• Expansion of x^9/((1-x)*(1-x^2)*(1-x^3))^2.at n=36A117485
• 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, -1, 0), (0, 0, -1), (0, 0, 1), (0, 1, -1), (1, 0, 1)}.at n=8A150670
• Number of (n+1) X (4+1) 0..1 arrays with every 2 X 2 subblock antidiagonal maximum minus diagonal minimum nondecreasing horizontally and diagonal maximum minus antidiagonal minimum nondecreasing vertically.at n=31A253393
• a(n) = n! * [x^n] exp(n*x)/cosh(x).at n=6A302585
• T(n, k) = [x^k] M(n)*Sum_{k=0..n} E2(n, k)*binomial(-x + n - k, 2*n), where E2 are the second-order Eulerian numbers A340556 and M(n) are the Minkowski numbers A053657. Triangle read by rows, T(n, k) for n >= 0 and 0 <= k <= 2*n+1.at n=20A341111
• Number of addition sums of the form x + y = z with 0 < x < y in base n, where each digit of the base appears at most once among all of x, y and z.at n=11A387334