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A154471
Function A154470 iterated, starting from the initial value 31706.
3
31706, 4517553, 4875253, 59657666, 65204804, 467824043836025, 289931140991491544956, 232993060651625904999520564, 12090001045837621170309278896817, 41831072194327417802054794318226030
OFFSET
0,1
COMMENTS
Note how A014486(31706) = 2988236 and (A014486->parenthesization 2988236) = (() (() (()) (())) (()) (())), from which, when after converting ()'s to e's we get: (e (e (e) (e)) (e) (e)), corresponding to the initial state e[e[e][e]][e][e] of Wolfram's system. A154472 gives the corresponding sequence with ()'s removed.
FORMULA
a(0) = 31706, a(n) = A154470(a(n-1)).
PROG
(Scheme:) (define (A154471 n) (if (= 0 n) 31706 (A154470 (A154471 (-1+ n)))))
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Jan 11 2009
STATUS
approved