421200

Appears in sequences

• a(n) = (n+1)*binomial(n+4, 4).at n=23A027800
• Products of 4 consecutive integers: a(n) = n*(n-1)*(n-2)*(n-3).at n=27A052762
• a(n) = n*(n-1)*(n-2)*(n-3) for n>=5.at n=27A052768
• a(n) = product of sum of taking n-1 numbers from the next n numbers. The next n numbers can be grouped like this (1), (2,3), (4,5,6), (7,8,9,10),... . Let N be the sum of all the members of the n-th group. Let k be a member and f(k) = N - k. Then a(n) = the product of all f(k) for k taking all member values.at n=3A080474
• X-values of solutions to the equation X*(X + 1) - 13*Y^2 = 0.at n=2A132644
• a(n) = sinh(2*arcsinh(n))^2 = 4*n^2*(n^2 + 1).at n=18A173116
• Total number of possible knight moves on an n X n X n chessboard, if the knight is placed anywhere.at n=25A180413
• Number of inequivalent colorings of the Fano plane with n colors.at n=12A241929
• Numbers k such that k and k+1 are both antiharmonic numbers (A020487).at n=10A335389
• Iterated Pochhammer symbol.at n=4A365617
• Positive integers of the form k^2 - 1 that are the product of two other distinct positive integers of the form k^2 - 1.at n=33A372497