(Denominators of Cauchy numbers of the second kind hat c_{2n})/6.

Terms

a(0) =1a(1) =5a(2) =14a(3) =15a(4) =22a(5) =910a(6) =60a(7) =255a(8) =1330a(9) =2310a(10) =276a(11) =13650a(12) =36a(13) =580a(14) =19096a(15) =19635a(16) =210a(17) =639730a(18) =5460a(19) =94710a(20) =39732a(21) =144900a(22) =39480a(23) =1624350a(24) =87516a(25) =104940a(26) =58520a(27) =33060a(28) =7080a(29) =227146920