|
| |
|
|
A102705
|
|
Numbers not of the form 7x + 9y with nonnegative x and y.
|
|
1
| |
|
|
0, 1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 15, 17, 19, 20, 22, 24, 26, 29, 31, 33, 38, 40, 47
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,3
|
|
|
COMMENTS
| Non-"Ting!Pong!" numbers: same principle as the "Ding!Bong!" game (see A102701). Here we count the natural numbers replacing 7 by Ting! and 9 by Pong! From 48 on, all numbers are combinations of Tings! or of Pongs!
|
|
|
LINKS
| Site map then "math curiosities" then "number cyclopedia" then Number 5, Number 5.
|
|
|
EXAMPLE
| 0 1 2 3 4 5 6 Ting! 8 Pong! 10 11 12 13 Ting-Ting! 15 Ting-Pong! 17 Pong-Pong! 19 20 Ting-Ting-Ting! 22 Ting-Ting-Pong! ...
|
|
|
CROSSREFS
| Cf. A102701.
Sequence in context: A034047 A047424 A094942 * A180636 A182625 A088232
Adjacent sequences: A102702 A102703 A102704 * A102706 A102707 A102708
|
|
|
KEYWORD
| less,easy,fini,full,nonn
|
|
|
AUTHOR
| Alexandre Wajnberg (alexandre.wajnberg(AT)ulb.ac.be), Feb 04 2005
|
| |
|
|
