Good sequence of increments for Shell sort (best on big values).

Terms

a(0) =1a(1) =5a(2) =19a(3) =41a(4) =109a(5) =209a(6) =505a(7) =929a(8) =2161a(9) =3905a(10) =8929a(11) =16001a(12) =36289a(13) =64769a(14) =146305a(15) =260609a(16) =587521a(17) =1045505a(18) =2354689a(19) =4188161a(20) =9427969a(21) =16764929a(22) =37730305a(23) =67084289a(24) =150958081a(25) =268386305a(26) =603906049a(27) =1073643521a(28) =2415771649a(29) =4294770689