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A359851
a(n) is the index of the smallest tetranacci number (A000078) with exactly n distinct prime factors.
4
3, 5, 8, 15, 20, 30, 53, 60, 80, 89, 130, 252
OFFSET
0,1
LINKS
Eric Weisstein's World of Mathematics, Distinct Prime Factors
Eric Weisstein's World of Mathematics, Tetranacci Number
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Ilya Gutkovskiy, Jan 15 2023
EXTENSIONS
a(11) from Daniel Suteu, Jan 17 2023
STATUS
approved