Record values in A260443.

Terms

a(0) =1a(1) =2a(2) =3a(3) =6a(4) =18a(5) =30a(6) =90a(7) =270a(8) =450a(9) =630a(10) =6750a(11) =20250a(12) =47250a(13) =330750a(14) =3543750a(15) =4961250a(16) =53156250a(17) =57881250a(18) =173643750a(19) =1910081250a(20) =9550406250a(21) =455814843750