Records in A001986.

Terms

a(0) =19a(1) =43a(2) =67a(3) =163a(4) =222643a(5) =1333963a(6) =2404147a(7) =20950603a(8) =51599563a(9) =96295483a(10) =146161723a(11) =1408126003a(12) =3341091163a(13) =52947440683a(14) =193310265163a(15) =229565917267a(16) =915809911867