Values of k associated with A033705.

Terms

a(0) =3a(1) =4a(2) =5a(3) =3a(4) =3a(5) =16a(6) =38a(7) =9a(8) =75a(9) =11a(10) =149a(11) =186a(12) =3a(13) =260a(14) =297a(15) =9a(16) =1589a(17) =531a(18) =131a(19) =1475a(20) =514a(21) =41139a(22) =21604940a(23) =65359479a(24) =170677592a(25) =933706818a(26) =5378862a(27) =806321563a(28) =360633274a(29) =199660579