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A304746
Restricted growth sequence transform of A291760(n), formed from 2-digits in ternary representation of A254103(n).
7
1, 1, 2, 1, 2, 1, 3, 4, 2, 1, 2, 4, 5, 1, 3, 1, 2, 6, 7, 4, 2, 6, 5, 1, 8, 1, 2, 6, 5, 1, 2, 4, 2, 9, 8, 4, 10, 1, 3, 11, 2, 6, 7, 1, 8, 1, 3, 6, 12, 6, 7, 9, 2, 9, 13, 4, 8, 14, 15, 4, 2, 6, 5, 11, 2, 16, 17, 4, 12, 6, 5, 11, 18, 1, 2, 19, 5, 9, 13, 1, 2, 9, 8, 14, 10, 1, 2, 4, 12, 1, 2, 6, 5, 9, 8, 1, 20, 9, 8, 14, 10, 21, 12, 1, 2, 21, 12
OFFSET
0,3
LINKS
PROG
(PARI)
A254103(n) = if(!n, n, if(!(n%2), (3*A254103(n/2))-1, (3*(1+A254103((n-1)/2)))\2));
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
Cf. also A304740, A304748.
Sequence in context: A330953 A360308 A325702 * A304748 A323903 A329382
KEYWORD
nonn,look
AUTHOR
Antti Karttunen, May 29 2018
STATUS
approved