Katadromes: digits in base 4 are in strict descending order.

A023786

Katadromes: digits in base 4 are in strict descending order.

Terms

    a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =8a(6) =9a(7) =12a(8) =13a(9) =14a(10) =36a(11) =52a(12) =56a(13) =57a(14) =228

External references