"EGJ" (unordered, element, labeled) transform of 2,1,1,1...

Terms

a(0) =1a(1) =2a(2) =3a(3) =7a(4) =21a(5) =41a(6) =178a(7) =743a(8) =1893a(9) =7141a(10) =40686a(11) =242045a(12) =734858a(13) =3426541a(14) =16135967a(15) =125737204a(16) =1002664205a(17) =3666743533a(18) =19447711462a(19) =106460517281a(20) =670516591350