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A331183
Number of values of k, 1 <= k <= n, with A323898(k) = A323898(n).
2
1, 1, 1, 2, 1, 1, 1, 3, 2, 2, 1, 1, 1, 1, 1, 4, 1, 1, 1, 2, 1, 2, 1, 1, 1, 3, 1, 1, 1, 1, 1, 5, 1, 3, 1, 1, 1, 4, 2, 2, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 3, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 6, 1, 1, 1, 3, 1, 1, 1, 1, 1, 5, 1, 4, 1, 1, 1, 2, 1, 6, 1, 1, 2, 3, 2, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 3, 1
OFFSET
1,4
COMMENTS
Ordinal transform of A323898, or equally, of the ordered pair [A000120(n), A083254(n)].
PROG
(PARI) up_to = 16384;
ordinal_transform(invec) = { my(om = Map(), outvec = vector(length(invec)), pt); for(i=1, length(invec), if(mapisdefined(om, invec[i]), pt = mapget(om, invec[i]), pt = 0); outvec[i] = (1+pt); mapput(om, invec[i], (1+pt))); outvec; };
A083254(n) = (2*eulerphi(n)-n);
A323898aux(n) = [hammingweight(n), A083254(n)];
v331183 = ordinal_transform(vector(up_to, n, A323898aux(n)));
A331183(n) = v331183[n];
CROSSREFS
Cf. also A331182, A331184.
Sequence in context: A345272 A373381 A373370 * A284082 A047040 A047020
KEYWORD
nonn
AUTHOR
Antti Karttunen, Jan 12 2020
STATUS
approved