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A138847 Row sums of a Collatz triangle. +0
2
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 (list; graph; listen)
OFFSET

0,2

COMMENT

Partial sums of A092892. Row sums of A138895.

FORMULA

a(n)=sum{k=0..n, A092892(n-k)}=sum{k=0..n, A092892(k)}.

CROSSREFS

Sequence in context: A092899 A075694 A144751 this_sequence A077777 A153829 A153830

Adjacent sequences: A138844 A138845 A138846 this_sequence A138848 A138849 A138850

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Mar 31 2008, Apr 02 2008

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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