This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A073618 #10 Nov 27 2023 18:29:47 %S A073618 1,1,1,2,3,12,30,60,210,840,1260,2520,13860,27720,180180,360360, %T A073618 180180,720720,6126120,12252240,116396280,232792560,116396280, %U A073618 232792560,2677114440,5354228880,13385572200,26771144400,40156716600,80313433200,1164544781400,2329089562800 %N A073618 Consider Pascal's triangle A007318; a(n) = LCM of terms at +45 degree slope with the horizontal. %C A073618 A025560 with an a(0) defined in addition. - _R. J. Mathar_, Sep 23 2008 %e A073618 The ninth diagonal is 1,7,15,10,1 and the LCM of the terms = 210 hence a(8) = 30. %p A073618 a:= n-> ilcm(seq(binomial(n-i, i), i=0..floor(n/2))): %p A073618 seq(a(n), n=0..35); # _Alois P. Heinz_, Nov 27 2023 %Y A073618 Cf. A025560, A073617. %K A073618 nonn %O A073618 0,4 %A A073618 _Amarnath Murthy_, Aug 07 2002 %E A073618 More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Mar 22 2003