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A041808 as a simple table

n a(n)
0 20
1 21
2 41
3 62
4 103
5 165
6 268
7 10885
8 11153
9 22038
10 33191
11 55229
12 88420
13 143649
14 5834380
15 5978029
16 11812409
17 17790438
18 29602847
19 47393285
20 76996132
21 3127238565
22 3204234697
23 6331473262
24 9535707959
25 15867181221
26 25402889180
27 41270070401
28 1676205705220

[20,21,41,62,103,165,268,10885,11153,22038,33191,
 55229,88420,143649,5834380,5978029,11812409,
 17790438,29602847,47393285,76996132,3127238565,
 3204234697,6331473262,9535707959,15867181221,
 25402889180,41270070401,1676205705220]

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Last modified March 26 16:33 EDT 2019. Contains 321510 sequences. (Running on oeis4.)