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 A261712 Reversed rows of A261644, seen as table read by rows. 5
 1, 1, 3, 1, 5, 8, 1, 5, 9, 12, 15, 3, 8, 13, 20, 25, 28, 31, 3, 8, 13, 17, 24, 29, 33, 37, 41, 44, 47, 52, 57, 60, 63, 2, 6, 10, 15, 24, 29, 33, 40, 47, 52, 57, 62, 66, 70, 77, 81, 85, 88, 91, 99, 105, 108, 111, 116, 121, 124, 127, 4, 12, 20, 25, 30, 34, 38 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS T(n+1,k) = T(n,k) for k = 1 .. A261727(n). LINKS Reinhard Zumkeller, Rows n = 1..20 of triangle, flattened EXAMPLE . n | T(n,*) | A261646(n) . ----+------------------------------------------------------+----------- . 1 | 1 | 1 . 2 | 1 | 1 . 3 | 3 | 1 . 4 | 1,5,8 | 3 . 5 | 1,5,9,12,15 | 5 . 6 | 3,8,13,20,25,28,31 | 7 . 7 | 3,8,13,17,24,29,33,37,41,44,47,52,57,60,63 | 15 . 8 | 2,6,10,15,24,29,33,40,47,52,57,62,66,70,77,81,85,... | 27 . 9 | 4,12,20,25,30,34,38,47,52,57,62,66,70,77,84,91,... | 49 . 10 | 2,6,10,15,24,29,33,37,45,50,55,60,68,76,84,93,98,... | 90 . 11 | 2,6,10,15,24,29,33,37,45,50,55,60,68,76,84,93,98,... | 171 . 12 | 2,6,10,15,24,29,33,37,45,50,55,60,68,76,84,93,98,... | 326 . 13 | 2,6,10,15,24,29,33,37,45,50,55,60,68,76,84,93,98,... | 613 . 14 | 2,6,10,15,24,29,33,37,45,50,55,60,68,76,84,93,98,... | 1174 . 15 | 2,6,10,15,24,29,33,37,45,50,55,60,68,76,84,93,98,... | 2255 . 16 | 2,6,10,15,24,29,33,37,45,50,55,60,68,76,84,93,98,... | 4333 . PROG (Haskell) a261712 n k = a261712_tabf !! (n-1) !! (k-1) a261712_row n = a261712_tabf !! (n-1) a261712_tabf = map reverse a261644_tabf CROSSREFS Cf. A261644, A261646 (row lengths), A261727. Sequence in context: A137328 A140991 A302191 * A038738 A210741 A208760 Adjacent sequences: A261709 A261710 A261711 * A261713 A261714 A261715 KEYWORD nonn,tabf AUTHOR Reinhard Zumkeller, Aug 31 2015 STATUS approved

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Last modified July 15 00:37 EDT 2024. Contains 374323 sequences. (Running on oeis4.)