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

3, 8, 12, 18, 26, 27, 38, 39, 54, 56, 57, 78, 80, 81, 84, 110, 114, 116, 117, 120, 158, 162, 164, 165, 170, 171, 174, 222, 230, 234, 236, 237, 242, 243, 246, 255, 318, 326, 330, 332, 333, 342, 344, 345, 350, 351, 354, 363, 446, 462, 470, 474, 476, 477, 486

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• easy

Examples

			From _Seiichi Manyama_, Feb 29 2024: (Start)
59049, 88574 and 177150 are terms and 177150 = 2*88574 + 2 = 3*59049 + 3.
80553, 120830 and 241662 are terms and 241662 = 2*120830 + 2 = 3*80553 + 3.
167913, 251870 and 503742 are terms and 503742 = 2*251870 + 2 = 3*167913 + 3. (End)
		

References

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

Links

• Seiichi Manyama, Table of n, a(n) for n = 1..10000
• R. K. Guy, Letter to N. J. A. Sloane with attachment, 1982

Crossrefs

Cf. A005662.

Extensions

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