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A370975 a(n) = (A370952(n+1) - A370952(n)) /(2*n+1). 3
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, -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, 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 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,7
LINKS
PROG
(Python)
from itertools import count, islice
def A370975_gen(): # generator of terms
a, aset = 1, {0, 1}
for p in count(3, 2):
for b in count(a%p, p):
if b not in aset:
aset.add(b)
yield (b-a)//p
a = b
break
A370095_list = list(islice(A370975_gen(), 20)) # Chai Wah Wu, Apr 17 2024
CROSSREFS
Sequence in context: A141044 A064284 A371807 * A030409 A030407 A287056
KEYWORD
sign
AUTHOR
N. J. A. Sloane, Apr 17 2024
STATUS
approved

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Last modified June 13 03:56 EDT 2024. Contains 373366 sequences. (Running on oeis4.)