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A150425 as a simple table

n a(n)
0 1
1 2
2 7
3 24
4 96
5 395
6 1692
7 7319
8 32328
9 144775
10 656618
11 3000338
12 13806890
13 63935867
14 297825840
15 1393862673
16 6549176577
17 30879353499
18 146076178016
19 693066334340
20 3296813436279
21 15718449300230
22 75100784861874
23 359528940397209
24 1724271608982013
25 8283000187595051
26 39849493869707366
27 191985084989792161

[1,2,7,24,96,395,1692,7319,32328,144775,656618,
 3000338,13806890,63935867,297825840,1393862673,
 6549176577,30879353499,146076178016,693066334340,
 3296813436279,15718449300230,75100784861874,
 359528940397209,1724271608982013,8283000187595051,
 39849493869707366,191985084989792161]

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Last modified January 26 08:18 EST 2020. Contains 331278 sequences. (Running on oeis4.)