21330

Appears in sequences

• a(n) = (2*n^3 + 5*n^2 - 13*n)/2.at n=26A162262
• The Wiener index of the Dutch windmill graph D(5,n) (n>=1).at n=29A180579
• Number of parts of the n-th subshell of the head of the last section of the set of partitions of any even integer >= 2n.at n=20A182992
• Triangle of coefficients of polynomials v(n,x) jointly generated with A209996; see the Formula section.at n=51A209998
• Number of partitions p of n such that (number of even numbers in p) > (number of odd numbers in p).at n=44A241640
• Expansion of Product_{k>=1} (1 + 5*x^k).at n=18A261569
• Numbers n such that n*prime(n) is a pandigital number containing digits 0-9 exactly once.at n=6A272552
• Number of nX3 0..1 arrays with every element unequal to 0, 1, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.at n=10A305913
• Number of chiral pairs of colorings of the edges of a regular tetrahedron using n or fewer colors.at n=8A337899
• Numbers that are the sum of five fourth powers in three or more ways.at n=33A344243
• Numbers that are the sum of five fourth powers in exactly three ways.at n=31A344244