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A005660 If k appears so do 2k+2 and 3k+3. (duplicates omitted.)
(Formerly M2716)
3

%I M2716 #37 Feb 29 2024 10:49:40

%S 3,8,12,18,26,27,38,39,54,56,57,78,80,81,84,110,114,116,117,120,158,

%T 162,164,165,170,171,174,222,230,234,236,237,242,243,246,255,318,326,

%U 330,332,333,342,344,345,350,351,354,363,446,462,470,474,476,477,486

%N If k appears so do 2k+2 and 3k+3. (duplicates omitted.)

%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

%H Seiichi Manyama, <a href="/A005660/b005660.txt">Table of n, a(n) for n = 1..10000</a>

%H R. K. Guy, <a href="/A005658/a005658.pdf">Letter to N. J. A. Sloane with attachment, 1982</a>

%e From _Seiichi Manyama_, Feb 29 2024: (Start)

%e 59049, 88574 and 177150 are terms and 177150 = 2*88574 + 2 = 3*59049 + 3.

%e 80553, 120830 and 241662 are terms and 241662 = 2*120830 + 2 = 3*80553 + 3.

%e 167913, 251870 and 503742 are terms and 503742 = 2*251870 + 2 = 3*167913 + 3. (End)

%Y Cf. A005662.

%K nonn,easy

%O 1,1

%A _N. J. A. Sloane_

%E More terms from Larry Reeves (larryr(AT)acm.org), Oct 01 2001

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Last modified July 20 05:30 EDT 2024. Contains 374441 sequences. (Running on oeis4.)