A086228 - OEIS

A086228

Determinant of n X n matrix M(i,j)=binomial(2i+1, j).

1, 3, 15, 140, 2520, 88704, 6150144, 843448320, 229417943040, 123987652771840, 133311524260282368, 285432092670742757376, 1217843595395169098137600, 10360289146303272377017958400, 175805226564926843718814452940800

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OFFSET

0,2

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..80

FORMULA

a(n) = 2^(n*(n-3)/2)*(n+1)*binomial(2*n+1, n)

MATHEMATICA

Table[2^(n*(n-3)/2)*(n+1)*Binomial[2*n+1, n], {n, 0, 30}] (* G. C. Greubel, Jan 25 2018 *)

PROG

(PARI) for(n=0, 30, print1(2^(n*(n-3)/2)*(n+1)*binomial(2*n+1, n), ", ")) \\ G. C. Greubel, Jan 25 2018

(Magma) [2^(n*(n-3)/2)*(n+1)*Binomial(2*n+1, n): n in [0..30]]; // G. C. Greubel, Jan 25 2018

CROSSREFS

Cf. A001803.

Sequence in context: A270524 A179471 A203417 * A288456 A230367 A293844

Adjacent sequences: A086225 A086226 A086227 * A086229 A086230 A086231

KEYWORD

nonn

AUTHOR

Benoit Cloitre, Aug 28 2003

STATUS

approved