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 A352191 Records in A352187. 2
 1, 2, 4, 6, 9, 12, 15, 18, 21, 24, 25, 30, 33, 36, 39, 42, 51, 56, 57, 77, 121, 207, 333, 345, 371, 391, 469, 871, 1111, 1121, 1341, 1557, 1719, 2043, 2051, 2367, 3421, 3951, 4527, 6127, 6849, 10307, 11007, 11061, 11079, 11133, 11511, 14113, 16753, 16839, 16911, 17973, 18153, 19161, 27731, 28831, 29447, 36949, 46783, 49093, 49577 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS PROG (Python) from math import gcd from itertools import count, islice from sympy import primefactors def A352191_gen(): # generator of terms bset, blist, mmax, c = {1, 2}, [1, 2], 3, 2 yield from blist while True: for m in count(mmax): if gcd(m, blist[-1]) > 1 and m not in bset: if all(blist[-2] % p == 0 for p in primefactors(blist[-1])) or gcd(m, blist[-2]) == 1: if m > c: yield m c = m blist = [blist[-1], m] bset.add(m) while mmax in bset: mmax += 1 break A352191_list = list(islice(A352191_gen(), 30)) # Chai Wah Wu, Mar 14 2022 CROSSREFS Cf. A352187, A352192. Sequence in context: A030763 A143145 A328212 * A256393 A130664 A014011 Adjacent sequences: A352188 A352189 A352190 * A352192 A352193 A352194 KEYWORD nonn AUTHOR N. J. A. Sloane, Mar 13 2022 STATUS approved

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Last modified November 29 13:01 EST 2022. Contains 358429 sequences. (Running on oeis4.)