Triangle defined by g.f. A(x,y) = exp( Sum_{n>=1} x^n/n * Sum_{k=0..n} binomial(n, k)^(k+1) * y^k ), as read by rows.

A228899

Triangle defined by g.f. A(x,y) = exp( Sum_{n>=1} x^n/n * Sum_{k=0..n} binomial(n, k)^(k+1) * y^k ), as read by rows.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =1a(6) =1a(7) =6a(8) =12a(9) =1a(10) =1a(11) =10a(12) =71a(13) =76a(14) =1a(15) =1a(16) =15a(17) =281a(18) =2153a(19) =701a(20) =1a(21) =1a(22) =21a(23) =861a(24) =29166a(25) =129509a(26) =8477a(27) =1a(28) =1a(29) =28

External references