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A082795 Smallest multiple of n beginning with 5. 8
5, 50, 51, 52, 5, 54, 56, 56, 54, 50, 55, 504, 52, 56, 510, 512, 51, 54, 57, 500, 504, 506, 506, 504, 50, 52, 54, 56, 58, 510, 527, 512, 528, 510, 525, 504, 518, 532, 507, 520, 533, 504, 516, 528, 540, 506, 517, 528, 539, 50, 51, 52, 53, 54 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(n) is in {n, 2n, 3n, 4n, 5n, 6n, 7n, 8n, 9n, 11n, 12n, 13n, 14n, 15n, 16n, 17n, 21n, 22n, 23n, 24n, 25n, 31n, 32n, 33n, 34n, 41n, 42n}. [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 != 5, m += n]; m]; Array[f, 54] (* Robert G. Wilson v *)

PROG

(PARI) a(n)=forstep(k=n, 42*n, n, if(Vec(Str(k))[1]=="5", return(k))) \\ Charles R Greathouse IV, Mar 06 2011

(Haskell)

a082795 n = until ((== 5) . a000030) (+ n) n

-- Reinhard Zumkeller, Mar 27 2012

CROSSREFS

Cf. A082794, A082796, A082797, A082798.

Cf. A000030.

Sequence in context: A203411 A218322 A247707 * A217398 A059008 A218290

Adjacent sequences:  A082792 A082793 A082794 * A082796 A082797 A082798

KEYWORD

base,easy,nonn

AUTHOR

Amarnath Murthy, Apr 20 2003

EXTENSIONS

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

STATUS

approved

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Last modified June 21 01:12 EDT 2021. Contains 345339 sequences. (Running on oeis4.)