OFFSET
0,3
LINKS
Antti Karttunen, Table of n, a(n) for n = 0..65537
PROG
(PARI)
A289814(n) = { my (d=digits(n, 3)); fromdigits(vector(#d, i, if (d[i]==2, 1, 0)), 2); } \\ From A289814
rgs_transform(invec) = { my(om = Map(), outvec = vector(length(invec)), u=1); for(i=1, length(invec), if(mapisdefined(om, invec[i]), my(pp = mapget(om, invec[i])); outvec[i] = outvec[pp] , mapput(om, invec[i], i); outvec[i] = u; u++ )); outvec; };
v304746 = rgs_transform(vector(65537, n, A291760(n-1)));
A304746(n) = v304746[1+n];
CROSSREFS
KEYWORD
nonn,look
AUTHOR
Antti Karttunen, May 29 2018
STATUS
approved