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A138895
Triangle read by rows: T(n,k) = A092892(n-k) for 0 <= k <= n.
3
1, 2, 1, 4, 2, 1, 8, 4, 2, 1, 5, 8, 4, 2, 1, 3, 5, 8, 4, 2, 1, 6, 3, 5, 8, 4, 2, 1, 12, 6, 3, 5, 8, 4, 2, 1, 24, 12, 6, 3, 5, 8, 4, 2, 1, 17, 24, 12, 6, 3, 5, 8, 4, 2, 1, 11, 17, 24, 12, 6, 3, 5, 8, 4, 2, 1
OFFSET
0,2
COMMENTS
Matrix in Toeplitz form related to the Collatz (3x + 1) algorithm.
Row sums are A138847. Antidiagonal sums are A138848.
EXAMPLE
Triangle begins
1;
2, 1;
4, 2, 1;
8, 4, 2, 1;
5, 8, 4, 2, 1;
3, 5, 8, 4, 2, 1;
6, 3, 5, 8, 4, 2, 1;
12, 6, 3, 5, 8, 4, 2, 1;
24, 12, 6, 3, 5, 8, 4, 2, 1;
17, 24, 12, 6, 3, 5, 8, 4, 2, 1;
11, 17, 24, 12, 6, 3, 5, 8, 4, 2, 1;
...
CROSSREFS
Cf. A092892 (1st column), A138847, A138848.
Sequence in context: A140740 A091918 A177953 * A138846 A235670 A130321
KEYWORD
easy,nonn,tabl
AUTHOR
Paul Barry, Apr 02 2008
EXTENSIONS
Edited by Georg Fischer, Jul 28 2023
STATUS
approved