Record values in A083206.

Terms

a(0) =0a(1) =1a(2) =3a(3) =5a(4) =17a(5) =140a(6) =375a(7) =1090a(8) =11753a(9) =373581a(10) =1278347a(11) =13637279a(12) =163618153a(13) =27924949575