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A248154
Row length of the irregular triangle A246646 (sieved modified Collatz table).
1
2, 5, 2, 8, 3, 2, 7, 2, 2, 5, 3, 2, 3, 60, 2, 2, 3, 2, 2, 3, 9, 2, 6, 3, 2, 5, 2, 2, 6, 3, 2, 9, 2, 2, 3, 2, 2, 3, 6, 2, 7, 2, 2, 2, 6, 2, 2, 3, 2, 3, 5, 2, 2, 3, 2, 2, 3, 2, 2, 5, 3, 2, 2, 9, 2, 2, 16, 3, 2, 3, 8, 2, 2, 3, 2, 2, 3, 5, 2, 6, 3, 2, 8, 2, 2, 5, 3, 2, 3, 6, 2, 3, 2, 2, 3, 6, 2, 8, 3, 2
OFFSET
1,1
EXAMPLE
Row n = 1 of A246646(n,m) is 2, 1 with length 2.
Row n = 14 for the starting number k = A246647(14) = 27 of the (modified) Collatz iteration has 60 entries in the sieved table A246646.
CROSSREFS
Sequence in context: A309324 A220072 A065223 * A274415 A292584 A029621
KEYWORD
nonn,easy
AUTHOR
Wolfdieter Lang, Oct 02 2014
STATUS
approved