Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).
%I #7 Jun 30 2023 22:17:15
%S 1,2,2,3,6,12,4,12,72,864,5,20,240,17280,14929920,6,30,600,144000,
%T 2488320000,37150418534400000,7,42,1260,756000,108864000000,
%U 270888468480000000000,10063619980174622195712000000000000000,8,56
%N Triangle with a(n,1) = n and a(n,k) = a(n,k-1) * a(n-1,k-1).
%e Rows start
%e 1;
%e 2, 2;
%e 3, 6, 12;
%e 4, 12, 72, 864;
%e ...
%Y Columns include A000027, A002378, A047928, A064321. Right-hand side is A064320. Cf. A053218 which uses addition rather than multiplication to produce binomial transform.
%K nonn,tabl
%O 1,2
%A _Henry Bottomley_, Sep 10 2001
%E Name corrected by _Sean A. Irvine_, Jun 30 2023