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A125023
Partial sums of A001372.
1
1, 2, 5, 12, 31, 78, 208, 551, 1502, 4117, 11435, 31926, 89829, 253727, 719926, 2048919, 5848543, 16732592, 47973762, 137788720, 396393362, 1141962118, 3294080424, 9512949813, 27501182865, 79579492065, 230478715333
OFFSET
0,2
FORMULA
a(n) = Sum_{i=0..n} A001372(i).
CROSSREFS
Sequence in context: A291239 A193284 A238829 * A129804 A317882 A335457
KEYWORD
easy,nonn
AUTHOR
Jonathan Vos Post, Nov 15 2006
EXTENSIONS
More terms from R. J. Mathar, Sep 23 2007
STATUS
approved