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Triangular numbers in A062918.
1

%I #10 Dec 15 2017 17:35:52

%S 1,3,6,10,15,21,28,36,45,78,3741,4005,4278,14028,224115,238395,258121,

%T 994755,1104841,2440945,4601061,19185915,26451901,27073761,38250631,

%U 611712753,1787631321,3620877351,4427640253,16786524835,60302220121,65003739895,226236074130,367188935361,6710200324191

%N Triangular numbers in A062918.

%o (PARI) rev(n) = eval(concat(Vecrev(Str(n))));

%o lista(nn) = {s = 0; for (n=1, nn, s += rev(n); if (ispolygonal(s, 3), print1(s, ", ")););} \\ _Michel Marcus_, Sep 15 2015

%Y Cf. A062918.

%K base,nonn

%O 1,2

%A _Amarnath Murthy_, Apr 09 2002

%E More terms from _Jason Earls_, May 16 2002

%E More terms from _Michel Marcus_, Sep 15 2015

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Last modified September 21 15:57 EDT 2024. Contains 376087 sequences. (Running on oeis4.)