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A081890 A sum of decreasing powers. 0
1, 3, 7, 33, 643, 11073, 151867, 1816713, 19996963, 208630833, 2099398027, 20597485593, 198424412083, 1885822419393, 17740469253787, 165580566245673, 1535948935336003, 14178113530908753, 130361707324735147 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

COMMENTS

Binomial transform of A081687

FORMULA

a(n)=9^n-8^n-7^n-6^n+3*5^n

CROSSREFS

Cf. A081691.

Sequence in context: A057795 A054935 A024496 * A192880 A179115 A047907

Adjacent sequences:  A081887 A081888 A081889 * A081891 A081892 A081893

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Mar 30 2003

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Last modified February 17 18:27 EST 2012. Contains 206066 sequences.