A081537 LCM of row n of triangle in A081536.

1, 0, 6, 28, 60, 24, 420, 1320, 2520, 27720, 27720, 27720, 360360, 360360, 360360, 360360, 12252240, 281801520, 232792560, 232792560, 232792560, 232792560, 5354228880, 5354228880, 26771144400, 53542288800, 80313433200, 80313433200, 2329089562800, 2329089562800

Offset

1,3

Links

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

Formula

A003418(n-2) divides a(n), and a(n) = A003418(n) if n is odd or n is even and n+1 is not a prime power. - Charlie Neder, Feb 03 2019

Crossrefs

Cf. A081535, A081536, A081538.

Sequence in context: A298168 A317478 A353901 * A058007 A033588 A014635

Adjacent sequences: A081534 A081535 A081536 * A081538 A081539 A081540

Keyword

nonn

Author

Amarnath Murthy, Mar 28 2003

Extensions

a(4) corrected and a(6)-a(18) from Charlie Neder, Feb 03 2019

More terms from Jinyuan Wang, May 03 2020

Status

approved