30176

Appears in sequences

• Values of y in solutions (x,y,z) to the Diophantine equation x^3-x^2+y^3-y^2=z^3-z^2, with 1<x<y<z arranged in order of increasing x.at n=28A138668
• a(n) = 2*n*(9*n-1).at n=40A178574
• Number of simple directed cycles in the binary de Bruijn graphs of order n.at n=4A306522
• Expansion of e.g.f. (1/x) * Series_Reversion( 2*x/(3 - exp(2*x)) ).at n=7A371009
• a(n) is the number of sets of distinct four-cuboid combinations that fill an n X n X n cube excluding combinations that contain cube-shaped cuboids.at n=31A386756