A230565 a(n)*|a(n)| gives the first difference of A230455.

1, 2, 3, 4, 5, -7, 6, 8, -9, 10, -11, 12, 13, -17, 14, 15, -21, 16, 18, -24, 19, 20, -27, 22, 23, -32, 25, 26, -36, 28, 29, -40, 30, -31, 33, 34, -46, 35, 37, -52, 38, 39, -54, 41, 42, -59, 43, 44, -61, 45, 47, -65, 48, -49, 50, 51, -70, 53, 55, -77, 56, -57

Offset

1,2

Comments

This sequence contains only terms with distinct absolute values, different from 0.

Links

Paul Tek, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A230455, A230560.

Sequence in context: A131424 A336285 A222249 * A072797 A131169 A131170

Adjacent sequences: A230562 A230563 A230564 * A230566 A230567 A230568

Keyword

sign

Author

Paul Tek, Oct 23 2013

Status

approved