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 A342626 Second differences of the x-coordinates of the vertices of the Babylonian Wurm. 5
 1, 1, 0, 0, -2, -1, -1, 2, 1, 2, 1, 0, 1, 0, -1, -1, -3, -1, -1, -2, 1, 3, 1, 3, -2, 1, 2, -5, -1, -1, -4, -2, 1, -1, -1, 0, 0, 1, -1, 0, 2, 1, 5, -1, -3, 2, -4, 3, -2, 6, 1, 1, 6, 1, 1, 1, 1, 0, -1, 1, -2, 2, -1, 1, -3, -1, -3, 2, -5, 1, 3, 3, -1, -1, -2, -5 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,5 COMMENTS Equivalently, the first differences of A342624. LINKS James Rayman, Table of n, a(n) for n = 1..10000 Index entries for sequences related to coordinates of 2D curves FORMULA a(n) = A342622(n+2) - 2*A342622(n+1) + A342622(n). PROG (Python) for i in range(10000): print(i+1, wurm(i+2)[0] - 2*wurm(i+1)[0] + wurm(i)[0]) # 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 A342627 for the second differences of the y-coordinates. Sequence in context: A276167 A105522 A131774 * A358005 A078316 A207668 Adjacent sequences: A342623 A342624 A342625 * A342627 A342628 A342629 KEYWORD sign,easy AUTHOR James Rayman, Apr 17 2021 STATUS approved

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Last modified September 9 22:43 EDT 2024. Contains 375765 sequences. (Running on oeis4.)