Records in A110765.

Terms

a(0) =2a(1) =6a(2) =10a(3) =30a(4) =70a(5) =210a(6) =770a(7) =2310a(8) =10010a(9) =30030a(10) =34034a(11) =170170a(12) =510510a(13) =646646a(14) =3233230a(15) =9699690a(16) =14872858a(17) =74364290a(18) =223092870a(19) =431312882a(20) =2156564410a(21) =6469693230a(22) =13370699342a(23) =66853496710a(24) =200560490130a(25) =494715875654