Number of brilliant numbers < 10^n.

Terms

a(0) =3a(1) =10a(2) =73a(3) =241a(4) =2504a(5) =10537a(6) =124363a(7) =573928a(8) =7407840a(9) =35547994a(10) =491316166a(11) =2409600865a(12) =34896253009a(13) =174155363186