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%I #13 Dec 29 2023 12:08:12
%S 1,2,3,3,4,5,4,5,6,7,4,5,6,7,8,5,6,7,8,9,10,6,7,8,9,10,11,12,5,6,7,8,
%T 9,10,11,12,6,7,8,9,10,11,12,13,14,7,8,9,10,11,12,13,14,15,16,8,9,10,
%U 11,12,13,14,15,16,17,18,5,6,7,8,9,10,11,12,13,14,15,16,6,7,8,9,10,11,12
%N a(1) = 1. a(m(m+1)/2 + k) = a(m) + k, 1 <= k <= m+1, m >= 1.
%H Kevin Ryde, <a href="/A120244/b120244.txt">Table of n, a(n) for n = 1..10011</a>
%H Kevin Ryde, <a href="/A120244/a120244.gp.txt">PARI/GP Code</a>
%o (PARI) See links.
%Y Cf. A120245, A120246.
%K easy,nonn
%O 1,2
%A _Leroy Quet_, Jun 12 2006
%E Extended by _Ray Chandler_, Jun 19 2006
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