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 A328399 Lexicographically earliest infinite sequence such that a(i) = a(j) => A328475(i) = A328475(j) for all i, j. 3
 1, 1, 2, 1, 3, 2, 4, 4, 5, 1, 6, 2, 7, 7, 8, 4, 9, 5, 10, 10, 11, 7, 12, 8, 13, 13, 14, 10, 15, 11, 16, 16, 17, 16, 18, 17, 19, 19, 20, 1, 21, 2, 22, 22, 23, 4, 24, 5, 25, 25, 26, 7, 27, 8, 28, 28, 29, 10, 30, 11, 31, 31, 32, 31, 33, 32, 34, 34, 35, 16, 36, 17, 37, 37, 38, 19, 39, 20, 40, 40, 41, 22, 42, 23, 43, 43, 44, 25, 45, 26, 46, 46, 47, 46, 48, 47 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS Restricted growth sequence transform of A328475, defined as A328475(n) = A111701(A276086(n)). LINKS Antti Karttunen, Table of n, a(n) for n = 0..32768 Index entries for sequences related to primorial base PROG (PARI) up_to = 32768; 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; }; A111701(n) = forprime(p=2, , if(n%p, return(n), n /= p)); A276086(n) = { my(m=1, p=2); while(n, m *= (p^(n%p)); n = n\p; p = nextprime(1+p)); (m); }; A328475(n) = A111701(A276086(n)); v328399 = rgs_transform(vector(up_to+1, n, A328475(n-1))); A328399(n) = v328399[1+n]; CROSSREFS Cf. A002110, A053589, A111701, A276086, A143293 (indices of 1's after a(0)=1). Cf. also A328477. Sequence in context: A368671 A183912 A144693 * A328171 A029139 A100927 Adjacent sequences: A328396 A328397 A328398 * A328400 A328401 A328402 KEYWORD nonn AUTHOR Antti Karttunen, Oct 19 2019 STATUS approved

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Last modified June 20 16:59 EDT 2024. Contains 373530 sequences. (Running on oeis4.)