id:A056560 - OEIS Search Results

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Tetrahedron with T(t,n,k)=n-k; succession of growing finite triangles with increasing values towards bottom left.

+0
9

0, 0, 1, 0, 0, 1, 0, 2, 1, 0, 0, 1, 0, 2, 1, 0, 3, 2, 1, 0, 0, 1, 0, 2, 1, 0, 3, 2, 1, 0, 4, 3, 2, 1, 0, 0, 1, 0, 2, 1, 0, 3, 2, 1, 0, 4, 3, 2, 1, 0, 5, 4, 3, 2, 1, 0, 0, 1, 0, 2, 1, 0, 3, 2, 1, 0, 4, 3, 2, 1, 0, 5, 4, 3, 2, 1, 0, 6, 5, 4, 3, 2, 1, 0, 0, 1, 0, 2, 1, 0, 3, 2, 1, 0, 4, 3, 2, 1, 0, 5, 4, 3, 2, 1, 0 (list; graph; listen)

	OFFSET	`0,8`
	FORMULA	`a(n) =A056557(n)-A056558(n)`
	EXAMPLE	`First triangle: [0]; second triangle: [0; 1 0]; third triangle: [0; 1 0; 2 1 0]; ...`
	CROSSREFS	`Together with A056558 and A056559 might enable reading "by antidiagonals" of cube arrays as 3-dimensional analogue of A002262 and A025581 with square arrays.` `Sequence in context: A031267 A065360 A101676 this_sequence A096608 A015964 A088950` `Adjacent sequences: A056557 A056558 A056559 this_sequence A056561 A056562 A056563`
	KEYWORD	`nonn`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), Jun 26 2000`

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

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