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A322313
Lexicographically earliest such sequence a that a(i) = a(j) => A322312(i) = A322312(j) for all i, j.
5
1, 2, 1, 3, 1, 4, 1, 5, 1, 6, 1, 7, 1, 2, 1, 8, 1, 9, 1, 9, 1, 6, 1, 10, 1, 2, 1, 11, 1, 12, 1, 13, 1, 2, 1, 14, 1, 2, 1, 10, 1, 15, 1, 11, 1, 6, 1, 16, 1, 6, 1, 11, 1, 17, 1, 18, 1, 6, 1, 19, 1, 2, 1, 20, 1, 12, 1, 3, 1, 21, 1, 22, 1, 2, 1, 3, 1, 23, 1, 16, 1, 6, 1, 24, 1, 2, 1, 25, 1, 26, 1, 11, 1, 2, 1, 27, 1, 2, 1, 28, 1, 23, 1, 18, 1
OFFSET
1,2
COMMENTS
Restricted growth sequence transform of A322312.
LINKS
PROG
(PARI)
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; };
A322312(n) = { my(m=1, p); fordiv(n, d, p=1+d; if(isprime(p), for(i=0, oo, if(n%(p^i), m *= prime(i); break)))); (m); };
v322313 = rgs_transform(vector(up_to, n, A322312(n)));
A322313(n) = v322313[n];
CROSSREFS
Sequence in context: A317746 A364449 A228179 * A322315 A375038 A319338
KEYWORD
nonn
AUTHOR
Antti Karttunen, Dec 03 2018
STATUS
approved