'Reverse and Add!' trajectory of 879.

Terms

a(0) =879a(1) =1857a(2) =9438a(3) =17787a(4) =96558a(5) =182127a(6) =903408a(7) =1707717a(8) =8884788a(9) =17759676a(10) =85455447a(11) =159910905a(12) =668930856a(13) =1326970722a(14) =3597766953a(15) =7194444906a(16) =13288889823a(17) =46187778054a(18) =91275556218a(19) =172541113437a(20) =906852258708