The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A280714 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing all changes.

A280714

Partial products of A055067.
(history; published version)

#10 by Joerg Arndt at Wed Nov 20 04:18:19 EST 2024

STATUS

proposed

approved

#9 by Jason Yuen at Wed Nov 20 00:06:51 EST 2024

STATUS

editing

proposed

#8 by Jason Yuen at Wed Nov 20 00:06:41 EST 2024

PROG

(Magma) [&*[Factorial(k) / &*[d: d in Divisors(k)]: k in [1..n]]: n in [1..100]];

STATUS

approved

editing

#7 by Charles R Greathouse IV at Thu Sep 08 08:46:18 EDT 2022

PROG

(MAGMAMagma) [&*[Factorial(k) / &*[d: d in Divisors(k): k in [1..n]]: n in [1..100]]

Discussion

Thu Sep 08

08:46

OEIS Server: https://oeis.org/edit/global/2944

#6 by N. J. A. Sloane at Wed Jan 11 03:32:28 EST 2017

STATUS

proposed

approved

#5 by Michael De Vlieger at Mon Jan 09 04:00:43 EST 2017

STATUS

editing

proposed

#4 by Michael De Vlieger at Mon Jan 09 03:58:50 EST 2017

MATHEMATICA

FoldList[#1 #2 &, Table[Times @@ Complement[Range@ n, Divisors@ n], {n, 14}]] (* Michael De Vlieger, Jan 09 2017 *)

STATUS

proposed

editing

Discussion

Mon Jan 09

04:00

Michael De Vlieger: This way is cleaner. We can click A055067 to get more info on that sequence, but your Comment clarifies what "A055067" means.

#3 by Jaroslav Krizek at Sat Jan 07 13:18:10 EST 2017

STATUS

editing

proposed

Discussion

Sun Jan 08

12:41

Jaroslav Krizek: I used in A280114 - A280117, A280131 - A280133, A280247 - A280248  names of the form Partial sums of Axxxxxx (...comment...). This form has been criticized in A280458, A280259, A280260 as unnecessarily long.

#2 by Jaroslav Krizek at Sat Jan 07 13:18:02 EST 2017

NAME

allocated for Jaroslav KrizekPartial products of A055067.

DATA

1, 1, 2, 6, 144, 2880, 2073600, 1306368000, 17557585920000, 637129677864960000, 2312016175036366848000000, 640890883720080890265600000000, 306987758727332698566646824960000000000, 136544225638605874463902854662848512000000000000

OFFSET

1,3

COMMENTS

A055067(n) = the product of non-divisors of n.

FORMULA

a(n) = Product_{i=1..n} A055067(i).

PROG

(MAGMA) [&*[Factorial(k) / &*[d: d in Divisors(k): k in [1..n]]: n in [1..100]]

CROSSREFS

Cf. A055067, A280713.

KEYWORD

allocated

nonn

AUTHOR

Jaroslav Krizek, Jan 07 2017

STATUS

approved

editing

#1 by Jaroslav Krizek at Sat Jan 07 13:08:22 EST 2017

NAME

allocated for Jaroslav Krizek

KEYWORD

allocated

STATUS

approved