A262437 Triangle T(n,k): write n in base 16, reverse order of digits.
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 0, 1, 1, 1, 2, 1, 3, 1, 4, 1, 5, 1, 6, 1, 7, 1, 8, 1, 9, 1, 10, 1, 11, 1, 12, 1, 13, 1, 14, 1, 15, 1, 0, 2, 1, 2, 2, 2, 3, 2, 4, 2, 5, 2, 6, 2, 7, 2, 8, 2, 9, 2, 10, 2, 11, 2, 12, 2, 13, 2, 14, 2, 15, 2
Offset: 0
Examples
. n | HEX | T(n,*) n | HEX | T(n,*) n | HEX | T(n,*) . ----+-----+-------- ----+-----+-------- ----+-----+-------- . 0 | 0 | [0] 24 | 18 | [8,1] 48 | 30 | [0,3] . 1 | 1 | [1] 25 | 19 | [9,1] 49 | 31 | [1,3] . 2 | 2 | [2] 26 | 1A | [10,1] 50 | 32 | [2,3] . 3 | 3 | [3] 27 | 1B | [11,1] 51 | 33 | [3,3] . 4 | 4 | [4] 28 | 1C | [12,1] 52 | 34 | [4,3] . 5 | 5 | [5] 29 | 1D | [13,1] 53 | 35 | [5,3] . 6 | 6 | [6] 30 | 1E | [14,1] 54 | 36 | [6,3] . 7 | 7 | [7] 31 | 1F | [15,1] 55 | 37 | [7,3] . 8 | 8 | [8] 32 | 20 | [0,2] 56 | 38 | [8,3] . 9 | 9 | [9] 33 | 21 | [1,2] 57 | 39 | [9,3] . 10 | A | [10] 34 | 22 | [2,2] 58 | 3A | [10,3] . 11 | B | [11] 35 | 23 | [3,2] 59 | 3B | [11,3] . 12 | C | [12] 36 | 24 | [4,2] 60 | 3C | [12,3] . 13 | D | [13] 37 | 25 | [5,2] 61 | 3D | [13,3] . 14 | E | [14] 38 | 26 | [6,2] 62 | 3E | [14,3] . 15 | F | [15] 39 | 27 | [7,2] 63 | 3F | [15,3] . 16 | 10 | [0,1] 40 | 28 | [8,2] 64 | 40 | [0,4] . 17 | 11 | [1,1] 41 | 29 | [9,2] 65 | 41 | [1,4] . 18 | 12 | [2,1] 42 | 2A | [10,2] 66 | 42 | [2,4] . 19 | 13 | [3,1] 43 | 2B | [11,2] 67 | 43 | [3,4] . 20 | 14 | [4,1] 44 | 2C | [12,2] 68 | 44 | [4,4] . 21 | 15 | [5,1] 45 | 2D | [13,2] 69 | 45 | [5,4] . 22 | 16 | [6,1] 46 | 2E | [14,2] 70 | 46 | [6,4] . 23 | 17 | [7,1] 47 | 2F | [15,2] 71 | 47 | [7,4] . 24 | 18 | [8,1] 48 | 30 | [0,3] 72 | 48 | [8,4] .
Links
- Reinhard Zumkeller, Rows n = 0..10000 of triangle, flattened
- Eric Weisstein's World of Mathematics, Hexadecimal
- Wikipedia, Hexadecimal
Crossrefs
Programs
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Haskell
a262437 n k = a262437_tabf !! n !! k a262437_row n = a262437_tabf !! n a262437_tabf = iterate succ [0] where succ [] = [1] succ (15:hs) = 0 : succ hs succ (h:hs) = (h + 1) : hs
Comments