A014486-codes for the compact representation of Beanstalk-tree, growing by two natural numbers at time, starting from the tree of one internal node (1) and two leaves (2 and 3), with the lesser numbers coming to the left hand side.
A218780
A014486-codes for the compact representation of Beanstalk-tree, growing by two natural numbers at time, starting from the tree of one internal node (1) and two leaves (2 and 3), with the lesser numbers coming to the left hand side.
Terms
- a(0) =2a(1) =10a(2) =44a(3) =180a(4) =728a(5) =2928a(6) =11720a(7) =46888a(8) =187568a(9) =750304a(10) =3001232a(11) =12004960a(12) =48019856a(13) =192079504a(14) =768318048a(15) =3073272224a(16) =12293088960a(17) =49172355968a(18) =196689423936a(19) =786757695872
External references
- oeis: A218780