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 A342627 Second differences of the y-coordinates of the vertices of the Babylonian Wurm. 5
 0, -1, -1, -1, -1, 0, 0, -1, 0, 1, 1, -1, 2, -1, -2, -1, -1, 0, 0, 1, -1, -1, 0, 1, -1, 0, 1, -2, 0, 0, 2, 3, -2, 1, 4, 1, 1, 3, -2, 1, 3, 1, 2, 0, -1, 1, -2, 2, -1, 2, 0, 0, -3, -1, -1, -2, -4, -1, -4, 3, -5, 4, -3, 2, -5, -1, -2, 1, -2, 0, 1, 2, -1, -1, -1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,13 COMMENTS Equivalently, the first differences of A342625. LINKS James Rayman, Table of n, a(n) for n = 1..10000 FORMULA a(n) = A342623(n+2) - 2*A342623(n+1) + A342623(n). PROG (Python) for i in range(10000): print(i+1, wurm(i+2)[1] - 2*wurm(i+1)[1] + wurm(i)[1]) # wurm is defined in the program for A256175 CROSSREFS See A256175 for the definition of the Babylonian Wurm. See A342622 and A342623 for the coordinates of the Wurm. See A342624 and A342625 for the first differences. See A342626 for the second differences of the x-coordinates. Sequence in context: A128410 A059782 A093654 * A220115 A039924 A275346 Adjacent sequences:  A342624 A342625 A342626 * A342628 A342629 A342630 KEYWORD sign,easy AUTHOR James Rayman, Apr 18 2021 STATUS approved

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Last modified August 2 13:35 EDT 2021. Contains 346424 sequences. (Running on oeis4.)