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A028991 formatted as a simple table:

n a(n)
0 1
1 9
2 75
3 111
4 261
5 325
6 559
7 651
8 969
9 1089
10 1491
11 1639
12 2125
13 2301
14 2871
15 3075
16 3729
17 3961
18 4699
19 4959
20 5781
21 6069
22 6975
23 7291
24 8281
25 8625
26 9699
27 10071
28 11229
29 11629
30 12871
31 13299
32 14625
33 15081
34 16491
35 16975
36 18469
37 18981
38 20559
39 21099

[1,9,75,111,261,325,559,651,969,1089,1491,1639,
 2125,2301,2871,3075,3729,3961,4699,4959,5781,6069,
 6975,7291,8281,8625,9699,10071,11229,11629,12871,
 13299,14625,15081,16491,16975,18469,18981,20559,
 21099]

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.


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