206720

Appears in sequences

• Icosagonal numbers divisible by 20.at n=31A117798
• Triangle, read by rows, T(n, k) = binomial(4*n, 3*k) + binomial(4*n, 3*(n-k)).at n=17A154918
• Triangle, read by rows, T(n, k) = binomial(4*n, 3*k) + binomial(4*n, 3*(n-k)).at n=18A154918
• A331776(n)/4.at n=32A332594