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A138847
Row sums of a Collatz triangle.
1
1, 3, 7, 15, 20, 23, 29, 41, 65, 82, 93, 100, 114, 123, 141, 177, 202, 251, 284, 349, 392, 478, 535, 574, 652, 805, 910, 1113, 1248, 1518, 1703, 1826, 2072, 2241, 2570, 2789, 2948, 3243, 3812, 4191, 4474, 4979, 5356, 5607, 5774, 5885, 6107
OFFSET
0,2
FORMULA
a(n) = Sum_{k=0..n} A092892(k).
a(n) = Sum_{k=0..n} A138895(n,k).
CROSSREFS
Partial sums of A092892.
Row sums of A138895.
Sequence in context: A323650 A350696 A144751 * A235699 A077777 A153829
KEYWORD
easy,nonn
AUTHOR
Paul Barry, Mar 31 2008, Apr 02 2008
STATUS
approved