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A068857 a(1) = 0 = 0*2; a(n) = smallest multiple of a(n-1) which is of the form 2k*(2k+2). 2
0, 8, 24, 48, 288, 16128, 11950848, 4636929024, 41732361216, 375591250944, 3380321258496, 30422891326464, 273806021938176, 2464254197443584, 22178287776992256, 199604589992930304, 399209179985860608 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..16.

EXAMPLE

24 = 4*6 is a member and the smallest multiple of 24 which is of the form 2k(2k+2) is 48 = 6*8.

CROSSREFS

Sequence in context: A033996 A146980 A028612 * A064225 A054275 A122655

Adjacent sequences:  A068854 A068855 A068856 * A068858 A068859 A068860

KEYWORD

nonn

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 12 2002

EXTENSIONS

More terms from Sascha Kurz, Mar 23 2002

STATUS

approved

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Last modified May 24 15:28 EDT 2013. Contains 225624 sequences.