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A359131
Number of odd primes in the Collatz trajectory of A177000(n).
1
0, 2, 1, 5, 4, 2, 3, 6, 5, 6, 2, 10, 8, 9, 7, 8, 6, 11, 9, 4, 7, 5, 8, 3, 9, 7, 4, 2, 3, 6, 9, 7, 10, 5, 8, 6, 11, 4, 2, 10, 3, 9, 10, 11, 12, 3, 6, 5, 11, 4, 10, 5, 3, 6, 7, 9, 7, 2, 7, 5, 8, 6, 4, 7, 5, 8, 3, 6, 9, 10, 5, 8, 3, 7, 8, 8, 13, 11, 11, 9, 12, 2
OFFSET
1,2
COMMENTS
Equivalently, a(n) = A055509(A177000(n)).
LINKS
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Dec 29 2022, following a suggestion from Rudolfo Nieves.
EXTENSIONS
a(38) and beyond from Michael S. Branicky, Dec 30 2022
STATUS
approved