1743588

Appears in sequences

• Triangulations of the disk G_{n,2}.at n=8A002711
• a(n) = (n-3)*(n-2)*(n-1)*n*(n+1)/30.at n=36A210569
• Numbers k such that A122111(k) [conjugated prime factorization of k] is one of Ore's Harmonic numbers (in A001599).at n=35A336317