Number of joining pairs of integer partitions of n.

Terms

a(0) =1a(1) =1a(2) =3a(3) =5a(4) =11a(5) =15a(6) =33a(7) =41a(8) =77a(9) =105a(10) =173a(11) =215a(12) =381a(13) =449a(14) =699a(15) =911a(16) =1335a(17) =1611a(18) =2433a(19) =2867a(20) =4179a(21) =5113a(22) =6903a(23) =8251a(24) =11769a(25) =13661a(26) =18177a(27) =22011a(28) =28997a(29) =33711