A342625 The y-coordinates of the vectors used to construct the Babylonian Wurm.

1, 1, 0, -1, -2, -3, -3, -3, -4, -4, -3, -2, -3, -1, -2, -4, -5, -6, -6, -6, -5, -6, -7, -7, -6, -7, -7, -6, -8, -8, -8, -6, -3, -5, -4, 0, 1, 2, 5, 3, 4, 7, 8, 10, 10, 9, 10, 8, 10, 9, 11, 11, 11, 8, 7, 6, 4, 0, -1, -5, -2, -7, -3, -6, -4, -9

Offset: 1

Author

James Rayman, Apr 09 2021

Keywords

• sign

Comments

Equivalently, this sequence gives the differences of the y-coordinates of successive vertices of the Babylonian Wurm.

Links

• James Rayman, Table of n, a(n) for n = 1..10000
• Index entries for sequences related to coordinates of 2D curves

Crossrefs

See A256175 for the definition of the Babylonian Wurm.

See A342624 for the x-coordinates.

Cf. A342622, A342623, A342626, A342627.

Programs

Python

for i in range(10000): print(i+1, wurm(i+1)[1] - wurm(i)[1]) # wurm is defined in the program for A256175.

Formula

a(n) = A342623(n+1) - A342623(n).