A160933 a(n)= n - reversal(n-1) - reversal(n+1)

-1, -2, -3, -4, -5, -6, -7, -8, 0, -10, -11, -30, -49, -68, -87, -106, -125, -144, -64, -83, -3, -22, -41, -60, -79, -98, -117, -136, -56, -75, 5, -14, -33, -52, -71, -90, -109, -128, -48, -67, 13, -6, -25, -44, -63, -82, -101, -120, -40, -59, 21, 2, -17, -36

Offset

1,2

Comments

a(8)=8-R(7)-R(9)=8-7-9=-8; a(15)=15+R(14)+R(16)=15-41-61=-87; a(26)=26-R(25)-R(27)=26-52-72=-98

Links

Table of n, a(n) for n=1..54.

Mathematica

Table[n-IntegerReverse[n-1]-IntegerReverse[n+1], {n, 60}] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Apr 18 2019 *)

Crossrefs

Sequence in context: A195832 A265523 A004184 * A265524 A256299 A256289

Adjacent sequences: A160930 A160931 A160932 * A160934 A160935 A160936

Keyword

base,sign

Author

Claudio Meller, May 30 2009

Status

approved