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A123957 as a simple table

n a(n)
1 0
2 0
3 0
4 1
5 0
6 3
7 -4
8 5
9 -24
10 19
11 -76
12 133
13 -208
14 627
15 -852
16 2181
17 -4232
18 7443
19 -18012
20 30533
21 -66880
22 133875
23 -250724
24 547013
25 -1020152
26 2108435
27 -4245612
28 8217861
29 -17089968
30 33202291
31 -67158900
32 135095301
33 -265925992
34 541112339
35 -1069523580
36 2146659781
37 -4309316128
38 8553624307

[0,0,0,1,0,3,-4,5,-24,19,-76,133,-208,627,-852,
 2181,-4232,7443,-18012,30533,-66880,133875,
 -250724,547013,-1020152,2108435,-4245612,8217861,
 -17089968,33202291,-67158900,135095301,-265925992,
 541112339,-1069523580,2146659781,-4309316128,
 8553624307]

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Last modified March 28 05:02 EDT 2024. Contains 371235 sequences. (Running on oeis4.)