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A110339 The n-th row of the following triangle contains n multiples of n not included earlier, coprime to the adjacent (n-1)th and (n+1)-th rows. Sequence contains the triangle by rows. +0
3
1, 2, 4, 3, 9, 15, 8, 16, 28, 32, 5, 25, 35, 55, 65, 6, 12, 18, 24, 36, 48, 7, 49, 77, 91, 119 (list; table; graph; listen)
OFFSET

1,2

EXAMPLE

1

2 4

3 9 15

8 16 28 32

5 25 35 55 65 (45 skipped as 45 is not coprime to 6).

6 12 18 24 36 48

...

CROSSREFS

Cf. A110340, A110341.

Sequence in context: A019600 A096901 A100781 this_sequence A075363 A082382 A064691

Adjacent sequences: A110336 A110337 A110338 this_sequence A110340 A110341 A110342

KEYWORD

more,nonn,tabl

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jul 20 2005

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.


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