login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A118815 Determinants of 5 X 5 matrices consisting of 25 consecutive primes. 2
-4656, 1440, 2912, 2832, -10464, -768, -17376, 20384, -72976, -18944, 12672, 41184, -199776, 28944, -21104, 3552, 25488, 338448, -60192, 39952, -21792, -161904, 499488, -83424, -7440, 7440, -54288, -75456, 1641792, 42288 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

5 X 5 analog of A117330.

LINKS

Table of n, a(n) for n=1..30.

EXAMPLE

a(1) = -4656 =

  | 2  3  5  7 11|

  |13 17 19 23 29|

  |31 37 41 43 47|

  |53 59 61 67 71|

  |73 79 83 89 97|.

PROG

(PARI) a(n) = matdet(matrix(5, 5, i, j, prime((n+j-1)+5*(i-1)))); \\ Michel Marcus, Jan 25 2021

CROSSREFS

Cf. A000040, A067276, A117301, A117330, A118713.

Sequence in context: A031615 A122713 A235235 * A235183 A069646 A159220

Adjacent sequences:  A118812 A118813 A118814 * A118816 A118817 A118818

KEYWORD

easy,sign

AUTHOR

Jonathan Vos Post, May 23 2006

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 25 19:34 EDT 2021. Contains 346291 sequences. (Running on oeis4.)