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A328047 Permutation of positive integers: a(1) = 1. For n > 1, a(n) is the smallest positive integer not already in the sequence such that bigomega(a(n)) != bigomega(a(n-1)), where bigomega(i) is A001222(i). 3
1, 2, 4, 3, 6, 5, 8, 7, 9, 11, 10, 12, 13, 14, 16, 15, 17, 18, 19, 20, 21, 23, 22, 24, 25, 27, 26, 28, 29, 30, 31, 32, 33, 36, 34, 37, 35, 40, 38, 41, 39, 42, 43, 44, 46, 45, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 59, 58, 60, 61, 62, 63, 64, 65, 66, 67 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..67.

PROG

(PARI) my(v=[1], terms=40); print1(1, ", "); while(1, if(#v > terms-1, break); for(k=1, oo, if(bigomega(k)!=bigomega(v[#v]) && !setsearch(vecsort(v), k), print1(k, ", "); v=concat(v, k); break)))

CROSSREFS

Cf. A001222, A328048, A328049, A328050.

Sequence in context: A227370 A135761 A086305 * A073898 A067747 A073846

Adjacent sequences:  A328044 A328045 A328046 * A328048 A328049 A328050

KEYWORD

nonn,easy

AUTHOR

Felix Fröhlich, Oct 03 2019

STATUS

approved

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Last modified July 12 20:45 EDT 2020. Contains 335669 sequences. (Running on oeis4.)