Number of ways to fold a strip of n stamps taking account of order and direction of folds.
A110837
Number of ways to fold a strip of n stamps taking account of order and direction of folds.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =36a(4) =176a(5) =864a(6) =4304a(7) =21448a(8) =107168a(9) =535488a(10) =2677088a(11) =13383712a(12) =66916832a(13) =334575552a(14) =1672869152a(15) =8364302864a(16) =41821471424a(17) =209107142784
External references
- oeis: A110837