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A247895 as a simple table

n a(n)
1 3
2 7
3 13
4 31
5 69
6 190
7 444
8 1052
9 2702
10 6455
11 15928
12 40073
13 100370
14 251707
15 637321
16 1617175
17 4124448
18 10553415
19 27066978
20 69709680
21 179992909
22 465769803
23 1208198532
24 3140421716
25 8179002120
26 21338685408
27 55762149030
28 145935689361
29 382465573486
30 1003652347100

[3,7,13,31,69,190,444,1052,2702,6455,15928,40073,
 100370,251707,637321,1617175,4124448,10553415,
 27066978,69709680,179992909,465769803,1208198532,
 3140421716,8179002120,21338685408,55762149030,
 145935689361,382465573486,1003652347100]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)