A213179 - OEIS

A213179

Numbers k such that 2*k is a partition number.

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

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OFFSET

1,2

LINKS

Table of n, a(n) for n=1..37.

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 *)

CROSSREFS