Number of M-sequences m_0,...,m_5 with m_1 < n.

Terms

a(0) =2a(1) =7a(2) =64a(3) =877a(4) =10742a(5) =102050a(6) =753994a(7) =4486435a(8) =22285884a(9) =95264798a(10) =359074648a(11) =1216716022a(12) =3763991016a(13) =10763615106a(14) =28741372964a(15) =72261453121a(16) =172248589406a(17) =391536067037a(18) =852876877928