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A034680 as a simple table

n a(n)
1 1
2 65
3 730
4 4097
5 15626
6 47450
7 117650
8 262145
9 531442
10 1015690
11 1771562
12 2990810
13 4826810
14 7647250
15 11406980
16 16777217
17 24137570
18 34543730
19 47045882
20 64019722
21 85884500
22 115151530
23 148035890
24 191365850
25 244140626
26 313742650

[1,65,730,4097,15626,47450,117650,262145,531442,
 1015690,1771562,2990810,4826810,7647250,11406980,
 16777217,24137570,34543730,47045882,64019722,
 85884500,115151530,148035890,191365850,244140626,
 313742650]

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Last modified April 6 03:52 EDT 2020. Contains 333267 sequences. (Running on oeis4.)