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A079653 Triangular numbers using only the curved digits 0, 3, 6, 8 and 9. 1

%I

%S 0,3,6,36,66,300,630,666,903,990,3003,6903,33930,39060,39903,63903,

%T 66066,69006,93096,306936,333336,339900,600060,609960,630003,669903,

%U 690900,833986,930930,936396,963966,3036880,3069003,3083886,3306306,3689686,3966336,3988900

%N Triangular numbers using only the curved digits 0, 3, 6, 8 and 9.

%H Amiram Eldar, <a href="/A079653/b079653.txt">Table of n, a(n) for n = 1..10000</a>

%t t[n_] := n*(n + 1)/2; t /@ Select[Range[0, 10000], AllTrue[IntegerDigits[t[#]], MemberQ[{0, 3, 6, 8 , 9}, #1] &] &] (* _Amiram Eldar_, Aug 18 2020 *)

%Y Intersection of A000217 and A072960.

%K base,nonn

%O 1,2

%A _Shyam Sunder Gupta_, Jan 23 2003

%E a(1) = 0 and more terms from _Amiram Eldar_, Aug 18 2020

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Last modified January 27 16:20 EST 2022. Contains 350608 sequences. (Running on oeis4.)