a(n) is one fourth of the total number of free ends of 4 line segments expansion at n iterations (see Comments lines for definition).
A238549
a(n) is one fourth of the total number of free ends of 4 line segments expansion at n iterations (see Comments lines for definition).
Terms
- a(0) =1a(1) =2a(2) =6a(3) =8a(4) =16a(5) =20a(6) =36a(7) =44a(8) =76a(9) =92a(10) =156a(11) =188a(12) =316a(13) =380a(14) =636a(15) =764a(16) =1276a(17) =1532a(18) =2556a(19) =3068a(20) =5116a(21) =6140a(22) =10236a(23) =12284a(24) =20476a(25) =24572a(26) =40956a(27) =49148a(28) =81916a(29) =98300
External references
- oeis: A238549