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A144121
Number of nonprime parts in the last section of the set of partitions of n.
3
1, 1, 2, 4, 5, 9, 12, 20, 26, 39, 51, 76, 96, 136, 175, 241, 304, 412, 517, 686, 859, 1117, 1392, 1794, 2217, 2818, 3478, 4373, 5363, 6694, 8168, 10113, 12295, 15105, 18289, 22347, 26932, 32712, 39302, 47481, 56825, 68347
OFFSET
1,3
COMMENTS
First differences of A144119.
FORMULA
a(n) = A138137(n)-A144120(n) = A144119(n)-A144119(n-1).
KEYWORD
easy,nonn
AUTHOR
Omar E. Pol, Sep 11 2008
STATUS
approved