432457640

Appears in sequences

• Central decanomial coefficients: largest coefficient of (1 + x + ... + x^9)^n.at n=10A025015
• Doubly restricted composition numbers: number of compositions of 1+2+3+...+n = n(n+1)/2 into exactly n positive integers each no more than n.at n=10A077045
• The Lucky Tickets Problem.at n=5A174061
• Number of n-digits integers for which the sum of the odd-positioned digits equals the sum of the even-positioned digits.at n=9A197357
• a(n) is the constant term in the expansion of ( Sum_{k=1..n} x_k^(2*k-1) + x_k^(-(2*k-1)) )^(2*n).at n=5A329021