%I #4 Feb 10 2015 20:00:47
%S 2,6,18,54,148,342,705,1326,2326,4173,8361,18604,41296,85118,169747,
%T 352477,758153,1594105,3165858,5975091,11145201,21712333,45705877,
%U 102683622,237061239,543357180,1209463533,2598223818,5445429743
%N Number of length n 1..(2+1) arrays with every leading partial sum divisible by 2, 3, 5, 7 or 11
%C Column 2 of A254947
%H R. H. Hardin, <a href="/A254941/b254941.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..3....3....3....2....2....2....2....2....2....2....2....3....3....3....3....3
%e ..2....3....3....1....2....1....3....3....2....1....1....2....1....3....3....1
%e ..3....2....3....3....1....2....1....2....3....1....2....1....2....2....1....1
%e ..2....3....1....2....3....2....3....2....1....3....3....3....2....1....3....3
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 10 2015
|