login
A230565
a(n)*|a(n)| gives the first difference of A230455.
2
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.
CROSSREFS
Sequence in context: A131424 A336285 A222249 * A072797 A131169 A131170
KEYWORD
sign
AUTHOR
Paul Tek, Oct 23 2013
STATUS
approved