A059995 Drop the final digit of n.

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10

Offset

0,21

Links

Harry J. Smith, Table of n, a(n) for n = 0..1000

Index entries for sequences related to final digits of numbers

Index entries for linear recurrences with constant coefficients, signature (1,0,0,0,0,0,0,0,0,1,-1).

Formula

a(n) = a(n-10) + 1.

a(n) = floor(n/10).

a(n) = (n - A010879(n))/10.

G.f.: x^10/((1-x)(1-x^10)).

Partial sums are given by A131242. - Hieronymus Fischer, Jun 21 2007

Mathematica

Table[FromDigits[Most[IntegerDigits[n]]], {n, 0, 110}] (* Harvey P. Dale, Sep 09 2016 *)

Prog

(PARI) a(n)=n\10+(n<0 && n%10) \\ Corrected by M. F. Hasler, May 19 2021
(PARI) { for (n=0, 1000, write("b059995.txt", n, " ", n\10); ) } \\ Harry J. Smith, Jul 01 2009
(PARI) a(n) = sign(n)*(abs(n)\10) \\ David A. Corneth, May 20 2021
(Python)
def A059995(n): return n//10 # Chai Wah Wu, Jan 20 2023

Crossrefs

Cf. A004526, A010879, A054899.

Sequence in context: A133880 A226233 A329624 * A132272 A179051 A324160

Adjacent sequences: A059992 A059993 A059994 * A059996 A059997 A059998

Keyword

base,easy,nonn

Author

Henry Bottomley, Mar 12 2001

Status

approved