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%I #10 Jul 23 2021 02:42:40
%S 1,1,2,4,9,20,47,109,258,609,1447,3434,8175,19449,46327,110330,262882,
%T 626317,1492515,3556540,8475679,20198343,48136276,114716767,273393363,
%U 651550405,1552783297,3700609736,8819356189
%N Shifts left under transform T where Ta is product of Partition Triangle A008284 with a.
%F G.f.: x + x * Sum_{n>=1} a(n) * x^n / Product_{j=1..n} (1 - x^j). - _Ilya Gutkovskiy_, Jul 22 2021
%Y Cf. A008284, A039809.
%K nonn,eigen
%O 1,3
%A _Christian G. Bower_, Feb 15 1999