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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Restricted growth sequence transform of A322312.

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..65537

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

Cf. A322312, A322315.

Sequence in context: A329534 A317746 A228179 * A322315 A319338 A177815

Adjacent sequences:  A322310 A322311 A322312 * A322314 A322315 A322316

KEYWORD

nonn

AUTHOR

Antti Karttunen, Dec 03 2018

STATUS

approved

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Last modified September 23 20:42 EDT 2021. Contains 347617 sequences. (Running on oeis4.)