A082798 Smallest multiple of n beginning with 8.

8, 8, 81, 8, 80, 84, 84, 8, 81, 80, 88, 84, 806, 84, 810, 80, 85, 810, 817, 80, 84, 88, 805, 816, 800, 806, 81, 84, 87, 810, 806, 800, 825, 816, 805, 828, 814, 836, 819, 80, 82, 84, 86, 88, 810, 828, 846, 816, 833, 800, 816, 832, 848, 810, 825, 840, 855, 812

Offset

1,1

Comments

a(n) is in {n, 2n, 3n, 4n, 5n, 6n, 7n, 8n, 9n, 11n, 12n, 13n, 14n, 15n, 16n, 17n, 18n, 21n, 22n, 23n, 24n, 25n, 26n, 27n, 31n, 32n, 33n, 34n, 35n, 36n, 41n, 42n, 43n, 44n, 45n, 51n, 52n, 53n, 54n, 61n, 62n, 63n, 71n, 72n}. [Charles R Greathouse IV, Mar 06 2011]

Links

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

Mathematica

f[n_] := Block[{m = n}, While[ First@ IntegerDigits@ m != 8, m += n]; m]; Array[f, 55] (* Robert G. Wilson v *)

Prog

(PARI) a(n)=forstep(k=n, 72*n, n, if(Vec(Str(k))[1]=="8", return(k))) \\ Charles R Greathouse IV, Mar 06 2011
(Haskell)
a082798 n = until ((== 8) . a000030) (+ n) n
-- Reinhard Zumkeller, Mar 27 2012
(Python)
def a(n):
    m = n
    while str(m)[0] != '8': m += n
    return m
print([a(n) for n in range(1, 59)]) # Michael S. Branicky, Aug 08 2021

Crossrefs

Cf. A082794, A082795, A082796, A082797.

Cf. A000030.

Sequence in context: A117861 A186984 A298962 * A286068 A228071 A192386

Adjacent sequences: A082795 A082796 A082797 * A082799 A082800 A082801

Keyword

base,easy,nonn

Author

Amarnath Murthy, Apr 20 2003

Extensions

Corrected and extended by Sean A. Irvine, Mar 06 2011

Status

approved