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A078548 a(n) = lcm(n, A052429(n)) - A052429(n). 2
0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 10, 10, 36, 24, 10, 42, 112, 64, 162, 18, 40, 20, 132, 20, 40, 72, 364, 48, 504, 27, 90, 90, 30, 192, 90, 30, 756, 432, 108, 36, 160, 80, 504, 40, 160, 264, 1288, 40, 1728, 45, 250, 250, 780, 520, 50, 810, 1960, 1120, 2610, 54, 360, 180 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,10

LINKS

Table of n, a(n) for n=1..62.

MATHEMATICA

lc[x_] := Apply[LCM, DeleteCases[IntegerDigits[x], 0]] Table[LCM[lc[w], w]-lc[w], {w, 1, 128}]

PROG

(PARI) lcnzd(n) = lcm(select(x->(x!=0), digits(n)));

a(n) = my(lc=lcnzd(n)); lcm(n, lc) - lc; \\ Michel Marcus, Mar 18 2018

CROSSREFS

Cf. A052429, A078546, A078547, A002796.

Sequence in context: A063543 A096166 A240919 * A095777 A168099 A004498

Adjacent sequences:  A078545 A078546 A078547 * A078549 A078550 A078551

KEYWORD

nonn,base

AUTHOR

Labos Elemer, Dec 05 2002

STATUS

approved

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Last modified August 11 00:32 EDT 2020. Contains 336403 sequences. (Running on oeis4.)