login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

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