login

A217988 as a simple table

na(n)
01
12
24
310
426
566
6160
7372
8840
91864
104096
118944
1219424
1341952
1490112
15192576
16409728
17868480
181835008
193866368
208125952
2117038848
2235651584
2374449920
24155191296
25322963456
26671088640
271392504832
282885672960
295972680704
3012348030976
3125501384704

[1,2,4,10,26,66,160,372,840,1864,4096,8944,19424,
 41952,90112,192576,409728,868480,1835008,3866368,
 8125952,17038848,35651584,74449920,155191296,
 322963456,671088640,1392504832,2885672960,
 5972680704,12348030976,25501384704]