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A304732 Restricted growth sequence transform of A046523(A304531(n)). 5
1, 2, 3, 2, 4, 5, 6, 5, 4, 7, 2, 3, 8, 3, 7, 4, 9, 4, 10, 11, 12, 13, 12, 14, 11, 12, 13, 12, 10, 15, 16, 5, 4, 7, 4, 9, 6, 17, 6, 9, 18, 2, 3, 8, 3, 7, 4, 9, 4, 7, 19, 3, 8, 20, 8, 19, 7, 18, 7, 21, 12, 13, 22, 13, 23, 12, 13, 22, 13, 21, 10, 24, 4, 7, 19, 7, 18, 9, 25, 9, 24, 15, 16, 15, 10, 21, 10, 26, 27, 28, 15, 10, 21, 10, 29, 30, 31, 32, 31 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
For all i, j: a(i) = a(j) => A304536(i-1) = A304536(j-1).
LINKS
PROG
(PARI)
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; };
A046523(n) = { my(f=vecsort(factor(n)[, 2], , 4), p); prod(i=1, #f, (p=nextprime(p+1))^f[i]); }; \\ From A046523
v304732 = rgs_transform(vector(74431, n, A046523(A304531(n)))); \\ Needs also code from A304531
A304732(n) = v304732[n];
CROSSREFS
Differs from related A304729 for the first time at n=66, where a(66) = 12, while A304729(66) = 15.
Compare also to scatter plots of A304535, A304098, A304729.
Sequence in context: A305303 A304757 A140503 * A304729 A297161 A227842
KEYWORD
nonn
AUTHOR
Antti Karttunen, May 19 2018
STATUS
approved

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Last modified February 22 06:09 EST 2024. Contains 370240 sequences. (Running on oeis4.)