A005661 k in S implies 2k-2, 3k-3 in S.

5, 8, 12, 14, 21, 22, 26, 33, 39, 40, 42, 50, 60, 63, 64, 75, 76, 78, 82, 96, 98, 114, 117, 118, 123, 124, 126, 147, 148, 150, 154, 162, 177, 186, 189, 190, 194, 222, 225, 226, 231, 232, 234, 243, 244, 246, 250, 285, 291, 292, 294, 298, 306, 322, 339, 348, 351

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn

Examples

			From _Seiichi Manyama_, Feb 29 2024: (Start)
663, 994 and 1986 are terms and 1986 = 2*994 - 2 = 3*663 - 3.
3159, 4738 and 9474 are terms and 9474 = 2*4738 - 2 = 3*3159 - 3.
18711, 28066 and 56130 are terms and 56130 = 2*28066 - 2 = 3*18711 - 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. A005659.

Extensions

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