A080465 Absolute difference between the two numbers formed by alternate digits of n.

1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 2, 1, 0, 1, 2, 3, 4, 5, 6, 7, 3, 2, 1, 0, 1, 2, 3, 4, 5, 6, 4, 3, 2, 1, 0, 1, 2, 3, 4, 5, 5, 4, 3, 2, 1, 0, 1, 2, 3, 4, 6, 5, 4, 3, 2, 1, 0, 1, 2, 3, 7, 6, 5, 4, 3, 2, 1, 0, 1, 2, 8, 7, 6, 5, 4, 3, 2, 1, 0, 1, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 9

Offset

10,4

Comments

Differs from A040115 first at a(110) = 9. - R. J. Mathar, Sep 19 2008

Links

T. D. Noe, Table of n, a(n) for n=10..10000

Example

a(132546) = |124 - 356| = 232.

Prog

(PARI) A080465(n)=abs(vector(#n=digits(n), j, (-1)^j*10^((#n-j)\2))*n~) \\ M. F. Hasler, Jan 10 2016

Crossrefs

Cf. A080463, A080464, A267086.

See also A040997.

Sequence in context: A040163 A113608 A040115 * A347689 A151950 A104418

Adjacent sequences: A080462 A080463 A080464 * A080466 A080467 A080468

Keyword

base,easy,nonn,look

Author

Amarnath Murthy, Mar 02 2003

Extensions

More terms from Ray Chandler, Oct 11 2003

Status

approved