A081891 a(n) = 10^n-9^n-8^n-7^n+3*6^n.

1, 4, 14, 64, 830, 14704, 228734, 3136144, 39450110, 468241264, 5338397054, 59140070224, 641540046590, 6850671429424, 72282030453374, 755587489260304, 7840735233590270, 80889167950995184, 830567232465613694

Offset

0,2

Comments

Binomial transform of A081690.

Links

Table of n, a(n) for n=0..18.

Index entries for linear recurrences with constant coefficients, signature (40,-635,5000,-19524,30240).

Formula

G.f.: -(6684*x^4-2956*x^3+489*x^2-36*x+1)/((6*x-1)*(7*x-1)*(8*x-1)*(9*x-1)*(10*x-1)). [Colin Barker, Aug 12 2012]

Crossrefs

Cf. A081690.

Sequence in context: A222467 A184265 A020041 * A119857 A305654 A241465

Adjacent sequences: A081888 A081889 A081890 * A081892 A081893 A081894

Keyword

easy,nonn,changed

Author

Paul Barry, Mar 30 2003

Status

approved