|
%I #7 Apr 21 2024 22:30:05
%S 1,252,8864856,40638618022744,23098236228791472696480,
%T 1568841035670687222903484318855680,
%U 12397389650957442295025809189993580551236444160
%N a(n) = product of all cyclic permutation of concatenation of first n numbers. In each case the digits of a number are kept together for n>9.
%C Initial terms are {n(n+1)/2}*{A000042(n)}.
%e a(1) = 1, a(2) = 12*21 = 252, a(3) = 123*231*312 = 8864856.
%Y Cf. A000042, A083956.
%K base,nonn,changed
%O 1,2
%A _Amarnath Murthy_, May 10 2003
%E More terms from _David Wasserman_, Dec 03 2004
| 