Number of series-reduced rooted trees whose leaves are non-singleton integer partitions whose multiset union is an integer partition of n.
A320295
Number of series-reduced rooted trees whose leaves are non-singleton integer partitions whose multiset union is an integer partition of n.
Terms
- a(0) =0a(1) =1a(2) =2a(3) =5a(4) =8a(5) =19a(6) =34a(7) =80a(8) =165a(9) =394a(10) =892a(11) =2192a(12) =5232a(13) =13057a(14) =32271a(15) =81568a(16) =205748a(17) =525735a(18) =1344828a(19) =3467415a(20) =8960849a(21) =23280323a(22) =60639680a(23) =158559047a(24) =415631368a(25) =1092734050a(26) =2879420753a(27) =7605713020a(28) =20130266302a(29) =53386744298
External references
- oeis: A320295