OFFSET
0,2
COMMENTS
LINKS
FORMULA
a(2^n) = 2 for all n >= 0.
PROG
(PARI)
\\ Needs also code from A323901.
up_to = 65537;
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; };
v331743 = rgs_transform(vector(1+up_to, n, Aux331743(n-1)));
A331743(n) = v331743[1+n];
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Feb 05 2020
STATUS
approved