id:A109474 - OEIS Search Results

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a(n) = least positive integer > a(n-1) and not equal to a(i)+a(j)+a(k) for 1<=i<=j<=k<=n.

+0
2

1, 3, 4, 13, 14, 23, 24, 33, 34, 43, 44, 53, 54, 63, 64, 73, 74, 83, 84, 93, 94, 103, 104, 113, 114, 123, 124, 133, 134, 143, 144, 153, 154, 163, 164, 173, 174, 183, 184, 193, 194, 203, 204, 213, 214, 223, 224, 233, 234, 243, 244, 253, 254, 263, 264, 273, 274, 283, 284 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`This was the original definition of A026476, but the terms there did not match this definition.` `Except for the first term, a(n)=10*n-a(n-1)-13 (with a(1)=3) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 26 2009]`
	FORMULA	`max{1, 5n-9+2(-1)^n}.`
	CROSSREFS	`Sequence in context: A082197 A138101 A095790 this_sequence A053910 A105074 A087884` `Adjacent sequences: A109471 A109472 A109473 this_sequence A109475 A109476 A109477`
	KEYWORD	`nonn,new`
	AUTHOR	`Bela Bajnok (bbajnok(AT)gettysburg.edu), Aug 10 2005`

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Last modified December 20 13:54 EST 2009. Contains 171081 sequences.

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