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A133345 as a simple table

na(n)
01
11
216
346
4316
51276
66976
731816
8161296
9768016
103794176
1118340576
1289799616
13436367296
142129929216
1510369000576
1650557010176
17246280028416
181200358199296
195848636796416
2028502288382976
21138885491915776

[1,1,16,46,316,1276,6976,31816,161296,768016,
 3794176,18340576,89799616,436367296,2129929216,
 10369000576,50557010176,246280028416,
 1200358199296,5848636796416,28502288382976,
 138885491915776]