%I #5 Jun 24 2012 11:15:43
%S 1,1,1,4,3,1,32,25,6,1,436,340,85,10,1,9012,7026,1755,215,15,1,262760,
%T 204862,51156,6265,455,21,1,10270696,8007602,1999620,244811,17780,854,
%U 28,1,518277560,404077632,100904602,12353796,896931,43092,1470,36,1
%N Triangle read by rows: matrix inverse of A154959.
%C First column is A005121.
%C Second column is A154961.
%e Triangle starts
%e 1,
%e 1, 1,
%e 4, 3, 1,
%e 32, 25, 6, 1,
%e 436, 340, 85, 10, 1,
%e 9012, 7026, 1755, 215, 15, 1,
%e 262760, 204862, 51156, 6265, 455, 21, 1,
%e 10270696, 8007602, 1999620, 244811, 17780, 854, 28, 1,
%e 518277560, 404077632, 100904602, 12353796, 896931, 43092, 1470, 36, 1
%K nonn,tabl
%O 1,4
%A _Mats Granvik_, Jan 18 2009