A005659 If k appears so do 2k-2 and 3k-3. (duplicates omitted.) (Formerly M3275)

4, 6, 9, 10, 15, 16, 18, 24, 27, 28, 30, 34, 42, 45, 46, 51, 52, 54, 58, 66, 69, 78, 81, 82, 87, 88, 90, 99, 100, 102, 106, 114, 123, 130, 132, 135, 136, 150, 153, 154, 159, 160, 162, 171, 172, 174, 178, 195, 196, 198, 202, 204, 210, 226, 231, 240, 243, 244, 258

Offset

1,1

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

Example

From Seiichi Manyama, Feb 29 2024: (Start)
87, 130 and 258 are terms and 258 = 2*130 - 2 = 3*87 - 3.
135, 202 and 402 are terms and 402 = 2*202 - 2 = 3*135 - 3.
231, 346 and 690 are terms and 690 = 2*346 - 2 = 3*231 - 3. (End)

Crossrefs

Cf. A005661.

Sequence in context: A099303 A243485 A310665 * A010462 A028957 A242664

Adjacent sequences: A005656 A005657 A005658 * A005660 A005661 A005662

Keyword

nonn,easy

Author

N. J. A. Sloane

Extensions

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

Status

approved