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A213179
Numbers k such that 2*k is a partition number.
12
1, 11, 15, 21, 28, 88, 245, 396, 501, 979, 1218, 1505, 1859, 2802, 3421, 6155, 18669, 26587, 44567, 52779, 62377, 102113, 225638, 307077, 357610, 415910, 650078, 870815, 1006279, 1161760, 2043984, 3544750, 4059132, 6066082, 6924325, 7898238, 13271830
OFFSET
1,2
FORMULA
a(n) = A052001(n)/2.
EXAMPLE
11 is in the sequence because 2*11 = 22 and 22 is a partition number: p(8) = A000041(8) = 22.
MATHEMATICA
Select[PartitionsP[Range@200]/2, IntegerQ] (* Giovanni Resta, May 05 2013 *)
KEYWORD
nonn
AUTHOR
Omar E. Pol, Feb 27 2013
STATUS
approved