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A120114 a(n) = lcm(1, ..., 2n+4)/lcm(1, ..., 2n+2). 2
6, 5, 14, 3, 11, 13, 2, 17, 19, 1, 23, 5, 3, 29, 62, 1, 1, 37, 1, 41, 43, 1, 47, 7, 1, 53, 1, 1, 59, 61, 2, 1, 67, 1, 71, 73, 1, 1, 79, 3, 83, 1, 1, 89, 1, 1, 1, 97, 1, 101, 103, 1, 107, 109, 1, 113, 1, 1, 1, 11, 1, 5, 254, 1, 131, 1, 1, 137, 139, 1, 1, 1, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

The subdiagonal of A120113 is -a(n).

LINKS

Muniru A Asiru, Table of n, a(n) for n = 0..5000

MATHEMATICA

Table[(LCM@@Range[2n+4])/LCM@@Range[2n+2], {n, 0, 100}] (* Harvey P. Dale, Dec 15 2017 *)

PROG

(GAP) List([0..75], n->Lcm(List([1..2*n+4], i->i))/Lcm(List([1..2*n+2], i->i))); # Muniru A Asiru, Mar 04 2019

CROSSREFS

Cf. A120113.

Sequence in context: A046627 A309550 A274931 * A123168 A119636 A300750

Adjacent sequences:  A120111 A120112 A120113 * A120115 A120116 A120117

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Jun 09 2006

EXTENSIONS

More terms from Harvey P. Dale, Dec 15 2017

STATUS

approved

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Last modified March 29 05:39 EDT 2020. Contains 333105 sequences. (Running on oeis4.)