Engel expansion of the positive root of x^x^x^x = 2.

Terms

a(0) =1a(1) =3a(2) =3a(3) =52a(4) =106a(5) =260a(6) =279a(7) =334a(8) =491a(9) =536a(10) =728a(11) =1161a(12) =5678a(13) =15183a(14) =41437a(15) =189034a(16) =281965a(17) =1118629a(18) =3473978a(19) =32869874a(20) =82525851a(21) =159312757a(22) =424570638a(23) =472381891a(24) =563118608a(25) =579529452a(26) =1426303902a(27) =2330077798a(28) =2991863700a(29) =25850322702