The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A326152 Number of integer partitions of n whose product of parts is 2 * n. 6
 0, 0, 0, 0, 0, 0, 0, 0, 3, 2, 2, 0, 5, 0, 2, 3, 5, 0, 7, 0, 5, 3, 2, 0, 10, 2, 2, 5, 5, 0, 9, 0, 9, 3, 2, 3, 14, 0, 2, 3, 10, 0, 9, 0, 5, 9, 2, 0, 17, 2, 7, 3, 5, 0, 14, 3, 10, 3, 2, 0, 19, 0, 2, 9, 13, 3, 9, 0, 5, 3, 9, 0, 27, 0, 2, 9, 5, 3, 9, 0, 17, 10, 2, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,9 COMMENTS Also the number of orderless factorizations of 2 * n into factors > 1 with sum at most n. The Heinz numbers of these partitions are given by A326151. LINKS EXAMPLE The a(8) = 3 through a(16) = 5 partitions (empty columns not shown) (A = 10):   (44)    (63)    (541)   (831)      (74111)   (A311)      (841111)   (422)   (3321)  (5221)  (6411)     (722111)  (651111)    (8221111)   (2222)                  (62211)              (53211111)  (442111111)                           (432111)                         (4222111111)                           (3222111)                        (22222111111) MATHEMATICA Table[Length[Select[IntegerPartitions[n], Times@@#==2*n&]], {n, 0, 30}] CROSSREFS Cf. A003963, A057567, A057568, A096276, A114324, A301987, A319005, A326149, A326151, A326156, A326157. Sequence in context: A144948 A108335 A239474 * A308181 A326816 A323557 Adjacent sequences:  A326149 A326150 A326151 * A326153 A326154 A326155 KEYWORD nonn AUTHOR Gus Wiseman, Jun 09 2019 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified May 30 05:35 EDT 2020. Contains 334712 sequences. (Running on oeis4.)