442597478400
domain: N
Appears in sequences
- Diagonal T(s,s) of triangle A059836.at n=12A059837
- Row 4 of array in A288580.at n=22A092398
- Expansion of e.g.f.: sqrt(1+2x)/sqrt(1-2x).at n=12A110491
- Bishops on an n X n board (see Robinson paper for details).at n=6A122747
- a(n) = (A166351(n))^2 = ((6*n)!/((3*n)!))^2.at n=2A166371
- a(n) = (n!/floor(n/2)!)^2.at n=12A193282
- a(n) is the least k such that A349281(k) = n.at n=16A349282