A130717 Second differences of A130845.

0, 1, -1, 0, 0, 2, -3, 1, 0, 3, -5, 2, 0, 4, -7, 3, 0, 5, -9, 4, 0, 6, -11, 5, 0, 7, -13, 6, 0, 8, -15, 7, 0, 9, -17, 8, 0, 10, -19, 9, 0, 11, -21, 10, 0, 12, -23, 11, 0, 13, -25, 12, 0, 14, -27, 13, 0, 15, -29, 14, 0, 16, -31, 15, 0, 17, -33, 16, 0, 18, -35, 17, 0, 19, -37, 18, 0, 20, -39, 19, 0, 21, -41, 20

Offset

0,6

Links

Table of n, a(n) for n=0..83.

Crossrefs

Sequence in context: A004572 A352799 A082839 * A137396 A244213 A346415

Adjacent sequences: A130714 A130715 A130716 * A130718 A130719 A130720

Keyword

sign

Author

Paul Curtz, Aug 16 2007

Status

approved