Ordered differences of double factorials.

Terms

a(0) =1a(1) =2a(2) =1a(3) =7a(4) =6a(5) =5a(6) =14a(7) =13a(8) =12a(9) =7a(10) =47a(11) =46a(12) =45a(13) =40a(14) =33a(15) =104a(16) =103a(17) =102a(18) =97a(19) =90a(20) =57a(21) =383a(22) =382a(23) =381a(24) =376a(25) =369a(26) =336a(27) =279a(28) =944a(29) =943