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A225360
Partition numbers of the form 9k.
8
135, 297, 792, 1575, 10143, 31185, 63261, 329931, 15796476, 44108109, 4835271870, 7346629512, 12292341831, 18440293320, 107438159466, 129913904637, 156919475295, 250438925115, 1527273599625, 3345365983698, 3646072432125, 7206841706490
OFFSET
1,1
COMMENTS
Intersection of A008591 and A000041.
FORMULA
a(n) = 9*A222179(n).
EXAMPLE
135 is in the sequence because 9*15 = 135 and 135 is a partition number: p(14) = A000041(14) = 135.
MATHEMATICA
Select[PartitionsP[Range[300]], Mod[#, 9] == 0 &]
KEYWORD
nonn
AUTHOR
Omar E. Pol, May 05 2013
STATUS
approved