145118821

Properties

Appears in sequences

• a(n) = Sum_{i=0..2*n} Sum_{j=0..i} T(i, j), where T is given by A026552.at n=20A026567
• a(n) = (2*6^(n+1) - 7) / 5.at n=10A233325
• Prime numbersat n=8184924