20472

Appears in sequences

• Expansion of e.g.f. cos(sin(x)*exp(x)).at n=9A009048
• Number of asymmetric rooted trees with a forbidden limb of length 3.at n=18A052325
• Expansion of (1-x+8x^2)/((1-x)(1-2x)) .at n=12A154252
• Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 58.at n=3A156517
• Number T(n,k) of reduced decompositions for all permutations of [n] with exactly k inversions; triangle T(n,k), n>=0, 0<=k<=n*(n-1)/2, read by rows.at n=49A289778
• Number of nX4 0..1 arrays with every element unequal to 0, 1, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.at n=9A306168
• Total number of binary digits in the partitions of n into odd parts.at n=38A319142
• Numbers k such that 403*2^k+1 is prime.at n=28A323101
• a(n) = Sum_{k=0..n} r_4(k^2 + 1), where r_4(k) is the number of ways of writing k as a sum of 4 squares (A000118).at n=17A333174