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A200739 as a simple table

n a(n)
0 1
1 0
2 0
3 1
4 5
5 24
6 116
7 561
8 2713
9 13120
10 63448
11 306833
12 1483837
13 7175800
14 34701996
15 167818017
16 811563889
17 3924703424
18 18979771248
19 91785716705
20 443873515701
21 2146561633048
22 10380720366244
23 50200913713873
24 242770409836169
25 1174031855833216
26 5677589783043784

[1,0,0,1,5,24,116,561,2713,13120,63448,306833,
 1483837,7175800,34701996,167818017,811563889,
 3924703424,18979771248,91785716705,443873515701,
 2146561633048,10380720366244,50200913713873,
 242770409836169,1174031855833216,5677589783043784]

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Last modified November 19 16:37 EST 2019. Contains 329323 sequences. (Running on oeis4.)