[0,0,0,3,6,13,25,45,91,154,322,525,1125,1793,3921, 6153,13671,21206,47718,73359,166800,254607,583947, 886171,2047375,3091971,7188451,10811671,25272481, 37877401,88959929,132924649,313498639]