The number of ways to write an n-bit binary string and then define each run of ones as an element in an equivalence relation.

A247100

The number of ways to write an n-bit binary string and then define each run of ones as an element in an equivalence relation.

Terms

    a(0) =1a(1) =2a(2) =4a(3) =9a(4) =21a(5) =51a(6) =127a(7) =324a(8) =844a(9) =2243a(10) =6073a(11) =16737a(12) =46905a(13) =133556a(14) =386062a(15) =1132107a(16) =3365627a(17) =10137559a(18) =30920943a(19) =95457178a(20) =298128278a(21) =941574417a(22) =3006040523a(23) =9697677885a(24) =31602993021a(25) =104001763258a(26) =345524136076

External references