%I #14 May 20 2021 10:14:59
%S 2,3,6,19,76,381,2286,16007,128056,1152505,11525050,126775551,
%T 1521306620,19776986061,276877804862,4153167072943,66450673167088,
%U 1129661443840497,20333905989128946,386344213793449975,7726884275868999516
%N a(0)=2, a(n) = (a(n-1) * n) OR n.
%F a(0)=2, a(n)=(a(n-1)*n) OR n, where OR is the bitwise logical inclusive-OR operator.
%o (Python)
%o a=2
%o for i in range(1,51):
%o print(a, end=',')
%o a *= i
%o a |= i
%K base,nonn
%O 0,1
%A _Alex Ratushnyak_, Apr 20 2012