%I #12 Oct 31 2024 22:35:10
%S 2,4,24,304,7072,294208,22272896,3156061952,857517830656,
%T 454271687304192,474176281265526784,981485679577766473728,
%U 4043641804936271388647424,33230444803201427664559095808
%N Shifts left under COMPOSE transform.
%H N. J. A. Sloane, <a href="/transforms.txt">Transforms</a>
%F a(n)=T(n,1), T(n,m)=m/n*sum(k=1..n, T(n-m,k)*2^(n-k)*binomial(n,k)), n>m, T(n,n)=2^n. [_Vladimir Kruchinin_, Aug 08 2013]
%o (Maxima) T(n,m):=if m=n then 2^m else m/n*sum(T(n-m,k)*2^(n-k)*binomial(n,k),k,1,n); makelist(T(n,1),n,1,15); /* _Vladimir Kruchinin_, Aug 08 2013 */
%K nonn,eigen,changed
%O 1,1
%A _Christian G. Bower_