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A370975 a(n) = (A370952(n+1) - A370952(n)) /(2*n+1).

%I A370975 #16 Apr 17 2024 15:04:15
%S A370975 1,1,-1,1,1,1,-2,2,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,-1,1,1,1,-1,1,
%T A370975 -1,1,-2,2,-2,2,-2,2,-2,2,-2,2,-2,2,-2,2,-1,-1,2,-2,2,1,-2,2,-2,2,-2,
%U A370975 2,-2,2,-2,2,-2,2,-2,2,-2,2,-2,2,-2,2,-2,2,-2,2,-2,2,-2,2,-2,2
%N A370975 a(n) = (A370952(n+1) - A370952(n)) /(2*n+1).
%H A370975 Chai Wah Wu, <a href="/A370975/b370975.txt">Table of n, a(n) for n = 1..10000</a>
%o A370975 (Python)
%o A370975 from itertools import count, islice
%o A370975 def A370975_gen(): # generator of terms
%o A370975     a, aset = 1, {0,1}
%o A370975     for p in count(3,2):
%o A370975         for b in count(a%p,p):
%o A370975             if b not in aset:
%o A370975                 aset.add(b)
%o A370975                 yield (b-a)//p
%o A370975                 a = b
%o A370975                 break
%o A370975 A370095_list = list(islice(A370975_gen(),20)) # _Chai Wah Wu_, Apr 17 2024
%Y A370975 Cf. A370952, A372052.
%K A370975 sign
%O A370975 1,7
%A A370975 _N. J. A. Sloane_, Apr 17 2024