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A081591 as a simple table

n a(n)
0 1
1 15
2 78
3 190
4 351
5 561
6 820
7 1128
8 1485
9 1891
10 2346
11 2850
12 3403
13 4005
14 4656
15 5356
16 6105
17 6903
18 7750
19 8646
20 9591
21 10585
22 11628
23 12720
24 13861
25 15051
26 16290
27 17578
28 18915
29 20301
30 21736
31 23220
32 24753
33 26335
34 27966
35 29646
36 31375
37 33153
38 34980

[1,15,78,190,351,561,820,1128,1485,1891,2346,2850,
 3403,4005,4656,5356,6105,6903,7750,8646,9591,
 10585,11628,12720,13861,15051,16290,17578,18915,
 20301,21736,23220,24753,26335,27966,29646,31375,
 33153,34980]

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Last modified May 24 15:09 EDT 2013. Contains 225624 sequences.