Rewrite n in binary with each digit occurring n times (see example). a(n) is the decimal equivalent.

A162472

Rewrite n in binary with each digit occurring n times (see example). a(n) is the decimal equivalent.

Terms

    a(0) =1a(1) =12a(2) =63a(3) =3840a(4) =31775a(5) =262080a(6) =2097151a(7) =4278190080a(8) =68585259519

External references