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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; text; 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

Table of n, a(n) for n=0..24.

Gianni A. Sarcone and Marie-Jo Waeber, Can you count in 'ding-bong'?.

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: A094942 A243494 A302505 * A180636 A182625 A333909

Adjacent sequences:  A102702 A102703 A102704 * A102706 A102707 A102708

KEYWORD

less,easy,fini,full,nonn

AUTHOR

Alexandre Wajnberg, Feb 04 2005

STATUS

approved

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Last modified April 17 06:46 EDT 2021. Contains 343059 sequences. (Running on oeis4.)