Numbers k such that the central binomial coefficient C(2*k,k) is divisible by k^4.

A283073

Numbers k such that the central binomial coefficient C(2*k,k) is divisible by k^4.

Terms

    a(0) =1a(1) =227736432a(2) =338956200a(3) =386160984a(4) =482213160a(5) =544508118a(6) =548823405a(7) =715592220a(8) =726922482a(9) =731987190a(10) =1427877360a(11) =1448431600a(12) =1467104760a(13) =1490842353a(14) =1491241258a(15) =1504640335a(16) =1646570115a(17) =1852712100a(18) =1923506200a(19) =1923927460a(20) =1924947570a(21) =2056580995a(22) =2064409413

External references