proposed

approved

editing

proposed

Cf. A234742, A235033, A235035, A260712, A260713, A260716.

Cf. also A260729, A260735, A260441 (other such iterations).

approved

editing

proposed

approved

editing

proposed

iterates_of_A234742(start, filename) = {my(n=start, prev=-1, prevprev=-1, i=0); until((n==prevprev), write(filename, i, " ", n); prevprev = prev; prev = n; n = A234742(n); i++)} \\ Computes b-fle file up to the second occurrence of the fixed point.

Antti Karttunen, <a href="/A244323/b244323.txt">Table of n, a(n) for n = 0..56</a>

Iterates of A234742, starting from value a(0) = 23, with a(1) = A234742(a(0)), a(2) = A234742(a(1)), etc.

Starting from 23, we get the The sequence: 23, 39, 99, 279, 775, 1271, 3003, 26411, 45059, ... which reaches its fixed point, at a(55) = 3643749709604450870616156947649219, after 55 iterations, after which the sequence stays constant, a(55) = a(56) = a(57), etc.

iterates_of_A234742(start, filename) = {my(n=start, prev=-1, prevprev=-1, i=0); until((n==prevprev), write(filename, i, " ", n); prevprev = prev; prev = n; n = A234742(n); i++)} \\ Computes b-fle up to the second occurrence of the fixed point.

allocated for Antti KarttunenIterates of A234742, starting value a(0) = 23, a(1) = A234742(a(0)), a(2) = A234742(a(1)), etc.

23, 39, 99, 279, 775, 1271, 3003, 26411, 45059, 53219, 96811, 180063, 538083, 1557987, 2994571, 5394027, 76600323, 78603291, 646326135, 5260930155, 11705029515, 55771437087, 918661840551, 2662267345431, 156054629431431, 1885162669463151, 2739827178329319, 23916267980687775, 343334160580618935

0,1

Starting from 23, we get the sequence: 23, 39, 99, 279, 775, 1271, 3003, 26411, 45059, ... which reaches its fixed point, a(55) = 3643749709604450870616156947649219, after 55 iterations, after which the sequence stays constant, a(55) = a(56) = a(57), etc.

(PARI)

A234742(n)=factorback(subst(lift(factor(Mod(1, 2)*Pol(binary(n)))), x, 2))+(n==1)

iterates_of_A234742(start, filename) = {my(n=start, prev=-1, prevprev=-1, i=0); until((n==prevprev), write(filename, i, " ", n); prevprev = prev; prev = n; n = A234742(n); i++)}

iterates_of_A234742(23, "b244323.txt")

Cf. A234742, A235033, A235035.

allocated

nonn

Antti Karttunen and M. F. Hasler, Jul 23 2014

approved

editing

allocated for Antti Karttunen

allocated

approved