42567

Appears in sequences

• a(n) = Sum_{m=1..n-1} floor(m(n-2)/2)^2.at n=15A125849
• Number of zero-sum -n..n arrays of 4 elements with first through third differences also in -n..n.at n=37A202512
• The hyper-Wiener index of the meta-polyphenyl chain with n hexagons (see the Dou et al. and the Deng references).at n=6A216111