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A278868 Second series of Hankel determinants based on hyperfactorial/4. 2
1, 1, 6183, 5772211367657472, 76148812142946816440318638031477145600000, 3940613226283843476344831941863494501303228636304800836707599745608602091520000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

It would be useful to know the formula for this sequence.

LINKS

Table of n, a(n) for n=0..5.

MAPLE

a:= n-> LinearAlgebra[Determinant](Matrix(n, (i, j)->

(t-> mul(k^k, k=0..t)/4)(i+j))):

seq(a(n), n=0..6); # Alois P. Heinz, Nov 29 2016

MATHEMATICA

Table[Det[Table[Hyperfactorial[i + j]/4, {i, n}, {j, n}]], {n, 6}].

CROSSREFS

Cf. A002109, A277829, A278770, A278860.

Sequence in context: A214556 A114930 A068757 * A255791 A186602 A031836

Adjacent sequences: A278865 A278866 A278867 * A278869 A278870 A278871

KEYWORD

nonn

AUTHOR

Karol A. Penson, Nov 29 2016

STATUS

approved

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Last modified January 29 07:45 EST 2023. Contains 359915 sequences. (Running on oeis4.)