6928350

Appears in sequences

• a(n) = (2n+4)!/(4!*n!*(n+1)!).at n=8A002803
• Four-column table read by rows: Quadruples that have the same value of phi, sigma, and tau.at n=27A322680
• Four-column table read by rows: Primitive distinct quadruples that have the same value of phi, sigma, and tau.at n=27A322690