id:A083197 - OEIS Search Results

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a(1) = 1, followed by even number of primes and odd number of composite numbers.

+0
1

1, 2, 3, 4, 6, 9, 5, 7, 11, 13, 10, 12, 14, 15, 16, 17, 19, 23, 29, 31, 37, 18, 20, 21, 22, 24, 25, 26, 41, 43, 47, 53, 59, 61, 67, 71, 27, 28, 30, 32, 33, 34, 35, 36, 38, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113 (list; table; graph; listen)

	OFFSET	`0,2`
	EXAMPLE	`In triangular form it is like this:` `1` `2 3` `4 6 9` `5 7 11 13` `10 12 14 15 16` `17 19 23 29 31 37` `...`
	CROSSREFS	`Sequence in context: A111792 A113197 A113199 this_sequence A141396 A098168 A035312` `Adjacent sequences: A083194 A083195 A083196 this_sequence A083198 A083199 A083200`
	KEYWORD	`easy,nonn,tabl`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 27 2003`

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Last modified November 21 14:49 EST 2008. Contains 150807 sequences.

AT&T Labs Research