A101685 First differences of A101684.

1, -1, 3, 1, -1, 3, 1, -1, 3, 1, -2, 4, 1, -2, 4, 1, -1, 3, 1, -1, 3, 1, -3, 5, 1, -3, 5, 1, -1, 3, 1, -1, 3, 1, -2, 4, 1, -2, 4, 1, -1, 3, 1, -1, 3, 1, -4, 6, 1, -4, 6, 1, -1, 3, 1, -1, 3, 1, -2, 4, 1, -2, 4, 1, -1, 3, 1, -1, 3, 1, -3, 5, 1, -3, 5, 1, -1, 3, 1, -1, 3, 1, -2, 4, 1, -2, 4

Offset

0,3

Comments

Presumably the sequence can be derived from A007814.

Links

Table of n, a(n) for n=0..86.

Formula

a(n) = A101684(n+1) - A101684(n). - Wesley Ivan Hurt, May 26 2024

Mathematica

Differences[IntegerExponent[Denominator[With[{nn = 80}, CoefficientList[Series[Exp[-1 + Sqrt[1 + x]], {x, 0, nn}], x] Range[0, nn]!]], 2]] (* Wesley Ivan Hurt, May 26 2024 after Harvey P. Dale *)

Crossrefs

Cf. A007814, A101684.

Sequence in context: A356308 A228925 A230405 * A238737 A049653 A281680

Adjacent sequences: A101682 A101683 A101684 * A101686 A101687 A101688

Keyword

sign

Author

Ralf Stephan, Dec 13 2004

Status

approved