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 A349551 Rectangular array with ten rows, read by falling antidiagonals: row k gives positions of k in the decimal expansion (A000796) of Pi. 2
 33, 51, 2, 55, 4, 7, 66, 38, 17, 1, 72, 41, 22, 10, 3, 78, 50, 29, 16, 20, 5, 86, 69, 34, 18, 24, 9, 8, 98, 95, 54, 25, 37, 11, 21, 14, 107, 96, 64, 26, 58, 32, 23, 30, 12, 117, 104, 74, 28, 60, 49, 42, 40, 19, 6 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS Every positive integer occurs exactly once. It is assumed that each digit occurs infinitely many times in A000796. LINKS Table of n, a(n) for n=0..54. Index entries for sequences that are permutations of the natural numbers EXAMPLE (Base-10 digits of Pi) = (3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5, 8, 9, 7, 9, 3, 2, 3, 8, 4, 6, 2, 6, 4, 3, 3, 8, 3, 2, 7, 9, 5, 0, ...); the position of the first 0 is 33, so the first term in row 0 is 33. Corner: 33, 51, 55, 66, 72, 78, 86, 98, 107, 117, 122, ... A014976 2, 4, 38, 41, 50, 69, 95, 96, 104, 111, 139, ... A053745 7, 17, 22, 29, 34, 54, 64, 74, 77, 84, 90, ... A053746 1, 10, 16, 18, 25, 26, 28, 44, 47, 65, 87, ... A053747 3, 20, 24, 37, 58, 60, 61, 71, 88, 93, 105, ... A053748 5, 9, 11, 32, 49, 52, 62, 91, 110, 131, 132, ... A053749 8, 21, 23, 42, 70, 73, 76, 83, 99, 109, 118, ... A053750 14, 30, 40, 48, 57, 67, 97, 100, 121, 140, 157, ... A053751 12, 19, 27, 35, 36, 53, 68, 75, 79, 82, 85, ... A053752 6, 13, 15, 31, 39, 43, 45, 46, 56, 59, 63, ... A053753 MATHEMATICA r = RealDigits[Pi, 10, 200][[1]] t = Table[Flatten[Position[r, n]], {n, 0, 9}] TableForm[t] (* A349551 array *) Flatten[Table[t[[n - k + 1, k]], {n, 10}, {k, n, 1, -1}]] (* A349551 sequence *) CROSSREFS Cf. A000796, A014976, A053745-A053753, A032445 (includes column 1). Sequence in context: A020293 A226698 A096278 * A204381 A034815 A014976 Adjacent sequences: A349548 A349549 A349550 * A349552 A349553 A349554 KEYWORD nonn,tabf AUTHOR Clark Kimberling, Dec 17 2021 STATUS approved

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Last modified July 21 13:28 EDT 2024. Contains 374474 sequences. (Running on oeis4.)