id:A081998 - OEIS Search Results

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A081998

Square array read by antidiagonals, alternating upwards and downwards: T(i, j) is the least number that is greater than the previous term and coprime to every number on the same row or column.

+0
4

1, 2, 3, 4, 5, 7, 9, 11, 13, 17, 19, 21, 23, 26, 29, 31, 37, 41, 43, 47, 49, 53, 59, 60, 61, 63, 67, 71, 73, 79, 83, 88, 89, 97, 101, 103, 107, 109, 113, 115, 127, 131, 137, 139, 143, 149, 151, 155, 157, 161, 163, 167, 169, 173, 179, 181, 187, 191, 193, 197, 198, 199 (list; table; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Is the sequence related to A067126? This should exhibit some number-theoretic properties.`
	EXAMPLE	`Array begins:` `1 2 7 9 ...` `3 5 11 ...` `4 13 ...` `17 ...`
	CROSSREFS	`Cf. A081999, A082000, A082001.` `Sequence in context: A008740 A089651 A063487 this_sequence A074583 A001092 A000430` `Adjacent sequences: A081995 A081996 A081997 this_sequence A081999 A082000 A082001`
	KEYWORD	`nonn,tabl`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 05 2003`
	EXTENSIONS	`More terms from David Wasserman (wasserma(AT)spawar.navy.mil), Jul 28 2004`

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Last modified December 20 00:58 EST 2009. Contains 171054 sequences.

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