Numbers k such that 2*(2k-3)!/(k!*(k-1)!) is an integer.

Terms

a(0) =2a(1) =3a(2) =7a(3) =16a(4) =21a(5) =29a(6) =43a(7) =46a(8) =67a(9) =78a(10) =89a(11) =92a(12) =105a(13) =111a(14) =127a(15) =141a(16) =154a(17) =157a(18) =171a(19) =188a(20) =191a(21) =205a(22) =210a(23) =211a(24) =221a(25) =229a(26) =232a(27) =239a(28) =241a(29) =267