Number of nonnegative integers with property that their base 7/4 expansion (see A024641) has n digits.

A245426

Number of nonnegative integers with property that their base 7/4 expansion (see A024641) has n digits.

Terms

    a(0) =7a(1) =7a(2) =14a(3) =21a(4) =42a(5) =70a(6) =126a(7) =217a(8) =378a(9) =665a(10) =1162a(11) =2037a(12) =3563a(13) =6237a(14) =10913a(15) =19096a(16) =33418a(17) =58485a(18) =102347a(19) =179109a(20) =313439a(21) =548520a(22) =959910a(23) =1679839a(24) =2939720a(25) =5144510a(26) =9002889a(27) =15755061a(28) =27571355a(29) =48249873

External references