login

A318338 as a simple table

na(n)
14
210
320
436
576
6160
7344
8748
91624
103544
117724
1216856
1336776
1480252
15175128
16382168
17833996
181819992
193971720
208667356
2118914520
2241276600
2390076716
24196571800
25428972904
26936135100
272042900376
284458162072
299728917388

[4,10,20,36,76,160,344,748,1624,3544,7724,16856,
 36776,80252,175128,382168,833996,1819992,3971720,
 8667356,18914520,41276600,90076716,196571800,
 428972904,936135100,2042900376,4458162072,
 9728917388]