A100740 Inverse modulo 2 binomial transform of 7^n.

1, 6, 48, 288, 2400, 14400, 115200, 691200, 5764800, 34588800, 276710400, 1660262400, 13835520000, 83013120000, 664104960000, 3984629760000, 33232930569600, 199397583417600, 1595180667340800, 9571084004044800

Offset

0,2

Comments

7^n may be retrieved as sum{k=0..n, mod(binomial(n,k),2)A100740(k)}.

Links

Table of n, a(n) for n=0..19.

Formula

a(n)=sum{k=0..n, (-1)^A010060(n-k)*mod(binomial(n, k), 2)7^k}.

Crossrefs

Sequence in context: A246587 A340309 A229504 * A043020 A073994 A165758

Adjacent sequences: A100737 A100738 A100739 * A100741 A100742 A100743

Keyword

easy,nonn

Author

Paul Barry, Dec 06 2004

Status

approved