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A319924 as a simple table

n a(n)
0 1
1 3
2 13
3 61
4 281
5 1261
6 5545
7 24025
8 102961
9 437581
10 1847561
11 7759753
12 32449873
13 135207801
14 561632401
15 2326762801
16 9617286241
17 39671305741
18 163352435401
19 671560012201
20 2756930576401
21 11303415363241
22 46290177201841
23 189368906734801
24 773942488394401

[1,3,13,61,281,1261,5545,24025,102961,437581,
 1847561,7759753,32449873,135207801,561632401,
 2326762801,9617286241,39671305741,163352435401,
 671560012201,2756930576401,11303415363241,
 46290177201841,189368906734801,773942488394401]

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Last modified December 12 09:36 EST 2019. Contains 329953 sequences. (Running on oeis4.)