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A309977 Position of n in row n of McGarvey's array; see A007062. 0
1, 1, 6, 4, 5, 11, 2, 22, 13, 15, 30, 4, 23, 11, 12, 58, 43, 45, 68, 28, 97, 37, 8, 64, 35, 95, 66, 10, 105, 21, 82, 54, 55, 155, 196, 126, 171, 93, 142, 184, 27, 235, 16, 290, 157, 65, 124, 18, 81, 131, 72, 288, 239, 243, 304, 36, 375, 209, 144, 276, 211 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..61.

EXAMPLE

McGarvey's array (from A007062):

   1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20

   2  1  4  3  6  5  8  7 10  9 12 11 14 13 16 15 18 17 20 19

   4  1  2  5  6  3 10  7  8 11 12  9 16 13 14 17 18 15 22 19

   5  2  1  4  7 10  3  6  9 12 11  8 17 14 13 16 19 22 15 18

   7  4  1  2  5 12  8  6  3 10 13 14 17  8 11 18 15 22 19 16

  12  5  2  1  4  7 14 13 10  3  6  8 22 15 18 11  8 17 24 23

  14  7  4  1  2  5 12 15 22  8  6  3 10 13 20 23 24 17  8 11

  15 12  5  2  1  4  7 14 23 20 13 10  3  6  8 22 25 28 31 18

In row 3, the entry 3 occurs in position 6, so that a(3) = 6.

MATHEMATICA

s[0] = Range[10000]; s[n_] := Flatten[Map[Reverse, Partition[s[n - 1], n]]];

Flatten[Table[Position[s[n], n], {n, 1, 500}]]

CROSSREFS

Cf. A007062.

Sequence in context: A199385 A177159 A317866 * A201408 A153606 A086057

Adjacent sequences:  A309974 A309975 A309976 * A309978 A309979 A309980

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Aug 25 2019

STATUS

approved

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Last modified May 14 07:13 EDT 2021. Contains 343879 sequences. (Running on oeis4.)