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A020662 Sequence contains no 9-term arithmetic progression. +0
1
1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23, 24, 27, 28, 29, 30, 31, 32, 33, 34, 37, 38, 39, 40, 41, 43, 44, 45, 46, 47, 48, 49, 50, 53, 55, 56, 57, 58, 59, 60, 64, 65, 66, 67, 68, 69, 70, 71, 78, 79, 80, 81, 82, 83, 84, 85, 87, 88, 91, 92, 94, 95, 96, 97 (list; graph; listen)
OFFSET

1,2

CROSSREFS

Sequence in context: A043094 A023803 A122132 this_sequence A107037 A032897 A032856

Adjacent sequences: A020659 A020660 A020661 this_sequence A020663 A020664 A020665

KEYWORD

nonn

AUTHOR

David W. Wilson (davidwwilson(AT)comcast.net)

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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