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A018102
Powers of fourth root of 20 rounded down.
2
1, 2, 4, 9, 20, 42, 89, 189, 400, 845, 1788, 3782, 8000, 16917, 35777, 75659, 160000, 338358, 715541, 1513186, 3200000, 6767176, 14310835, 30263731, 64000000, 135343521, 286216701, 605274629, 1280000000, 2706870434, 5724334022, 12105492595, 25600000000
OFFSET
0,2
MATHEMATICA
Floor[(Power[20, (4)^-1])^Range[0, 30]] (* Harvey P. Dale, Apr 25 2011 *)
CROSSREFS
KEYWORD
nonn,easy
STATUS
approved