Triangle of number of rises in restricted growth strings (RGS) for the set partitions of n.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =1a(6) =1a(7) =6a(8) =7a(9) =1a(10) =1a(11) =10a(12) =26a(13) =14a(14) =1a(15) =1a(16) =15a(17) =71a(18) =89a(19) =26a(20) =1a(21) =1a(22) =21a(23) =161a(24) =380a(25) =267a(26) =46a(27) =1a(28) =1a(29) =28