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A061650 n*20^(n-1). 1
1, 40, 1200, 32000, 800000, 19200000, 448000000, 10240000000, 230400000000, 5120000000000, 112640000000000, 2457600000000000, 53248000000000000, 1146880000000000000, 24576000000000000000, 524288000000000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Harry J. Smith, Table of n, a(n) for n=1,...,100

FORMULA

a(n)=n*20^(n-1).

PROG

(PARI) { for (n=1, 100, write("b061650.txt", n, " ", n*20^(n - 1)) ) } [From Harry J. Smith, Jul 25 2009]

CROSSREFS

Sequence in context: A004385 A152257 A229457 * A006101 A278381 A251202

Adjacent sequences:  A061647 A061648 A061649 * A061651 A061652 A061653

KEYWORD

easy,nonn

AUTHOR

Jason Earls (zevi_35711(AT)yahoo.com), Jun 14 2001

EXTENSIONS

Corrected and extended by Larry Reeves (larryr(AT)acm.org), Jun 18 2001

STATUS

approved

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Last modified August 22 22:36 EDT 2017. Contains 290952 sequences.