A073618 Consider Pascal's triangle A007318; a(n) = LCM of terms at +45 degree slope with the horizontal.

1, 1, 1, 2, 3, 12, 30, 60, 210, 840, 1260, 2520, 13860, 27720, 180180, 360360, 180180, 720720, 6126120, 12252240, 116396280, 232792560, 116396280, 232792560, 2677114440, 5354228880, 13385572200, 26771144400, 40156716600, 80313433200, 1164544781400, 2329089562800

Offset: 0

Author

Amarnath Murthy, Aug 07 2002

Keywords

• nonn

Comments

A025560 with an a(0) defined in addition. - R. J. Mathar, Sep 23 2008

Examples

			The ninth diagonal is 1,7,15,10,1 and the LCM of the terms = 210 hence a(8) = 30.
		

Crossrefs

Cf. A025560, A073617.

Programs

Maple

a:= n-> ilcm(seq(binomial(n-i, i), i=0..floor(n/2))):
seq(a(n), n=0..35);  # Alois P. Heinz, Nov 27 2023

Extensions

More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Mar 22 2003