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 A274529 Total number of distinct numbers in the first n antidiagonals of infinite Sudoku-type array A269526. 8
 1, 3, 4, 6, 6, 8, 10, 11, 13, 14, 16, 18, 18, 20, 20, 22, 22, 24, 26, 26, 27, 29, 30, 32, 35, 35, 38, 40, 40, 41, 43, 43, 43, 43, 47, 47, 47, 52, 53, 53, 54, 56, 58, 58, 60, 60, 60, 62, 64, 64, 67, 67, 68, 73, 74, 74, 74, 74, 77, 78, 78, 79, 80, 87, 87, 87, 87 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS a(n) is also the total number of distinct numbers in the first n antidiagonals of the square array A274528. LINKS Alois P. Heinz, Table of n, a(n) for n = 1..1000 EXAMPLE For n = 3, the first three antidiagonals of the square array A269526 are [1], [3, 2], [2, 4, 3]. The first four positive integers are in the list, so a(3) = 4. CROSSREFS Cf. A269526, A274528, A274530. Row lengths of A274534. A275883 is closely related but a different sequence. Sequence in context: A078574 A230300 A275883 * A284061 A162625 A033095 Adjacent sequences:  A274526 A274527 A274528 * A274530 A274531 A274532 KEYWORD nonn AUTHOR Omar E. Pol, Jun 30 2016 EXTENSIONS More terms from Alois P. Heinz, Jun 30 2016 STATUS approved

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Last modified February 21 03:06 EST 2019. Contains 320364 sequences. (Running on oeis4.)