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A225327
Partition numbers of the form 7k.
8
7, 42, 56, 77, 231, 385, 490, 1575, 2436, 3010, 10143, 21637, 31185, 37338, 44583, 124754, 147273, 281589, 329931, 386155, 451276, 1121505, 3087735, 8118264, 9289091, 20506255, 23338469, 49995925, 118114304, 133230930, 271248950, 607163746
OFFSET
1,1
COMMENTS
Intersection of A008589 and A000041.
FORMULA
a(n) = 7*A222175(n).
EXAMPLE
42 is in the sequence because 7*6 = 42 and 42 is a partition number: p(10) = A000041(10) = 42.
MATHEMATICA
Select[PartitionsP[Range[300]], Mod[#, 7] == 0 &]
KEYWORD
nonn
AUTHOR
Omar E. Pol, May 05 2013
STATUS
approved