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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 (list; graph; refs; listen; history; text; internal format)
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

Cf. A000041, A052001, A213365, A216258, A217725, A217726, A222175, A222178, A222179, A225317, A225323.

Sequence in context: A120156 A237278 A265114 * A211322 A087682 A104628

Adjacent sequences:  A213176 A213177 A213178 * A213180 A213181 A213182

KEYWORD

nonn

AUTHOR

Omar E. Pol, Feb 27 2013

STATUS

approved

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Last modified July 26 01:33 EDT 2021. Contains 346294 sequences. (Running on oeis4.)