Nearest integer to modified Bessel function K_n(2).

Terms

a(0) =0a(1) =0a(2) =0a(3) =1a(4) =2a(5) =9a(6) =49a(7) =306a(8) =2188a(9) =17810a(10) =162482a(11) =1642635a(12) =18231462a(13) =220420179a(14) =2883693795a(15) =40592133316a(16) =611765693528