A144022 (1, 2, 3, 2^2, 5, 2*3, 7, 2^3, 3^2, 2*5, 11, 2^2*3, 13, 2*7, 3*5,..) becomes (abs(1-2+3-2, 2-5+2-3, 7-2+3-3, 2-2+5-11, 2-2+3-13, 2-7+3-5,..)).

0, 4, 5, 6, 10, 7, 13, 18, 7, 12, 3, 11, 22, 27, 11, 17, 1, 51, 9, 35, 32, 4, 26, 4, 11, 40, 3, 5, 43, 56, 85, 6, 12, 57, 35, 67, 0, 105, 3, 21, 67, 2, 42, 1, 55, 19, 88, 9, 49, 59, 97, 6, 9, 102, 87, 12, 49, 0, 101, 36, 107, 35, 26, 63, 15, 6, 97, 27, 6, 129, 33, 128, 21, 62, 121

Offset

1,2

Links

Table of n, a(n) for n=1..75.

Example

Abs (2-7+3-5)=abs (-7) =7=a(6).
Abs (2-4+17-2)=abs(13)=13=a(7).
Abs (3-2+19-2)=abs (18)=18=a(8).
Abs (2-5+3-7)=abs (-7)=7=a(9).
Abs (2-11+23-2)=abs(12)=12=a(10),
etc.

Crossrefs

Cf. A141287, A141261, A136678, A143717.

Sequence in context: A058782 A115762 A169889 * A028280 A120520 A213523

Adjacent sequences: A144019 A144020 A144021 * A144023 A144024 A144025

Keyword

nonn

Author

Juri-Stepan Gerasimov, Nov 17 2008

Extensions

Corrected (11 replaced by 9, 5 replaced by 6, 104 by 102) by R. J. Mathar, Apr 18 2010

Status

approved