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A348246 Index of first occurrence of n in A307730. 12
1, 2, 4, 8, 47, 7, 52, 27, 17, 60, 1374, 26, 1385, 59, 46, 137, 3738, 98, 3755, 204, 83, 1399, 6680, 136, 320, 1398, 176, 224, 6703, 345, 84626, 252, 1447, 3775, 375, 203, 84657, 3774, 1446, 502, 89480, 410, 89521, 1480, 319, 6733, 91832, 542, 452, 1024, 3847, 1618, 91879, 690, 1524, 501, 3846, 6732, 173092, 1074, 173151, 84695, 645, 807, 1579, 1735, 192882 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

a(n) is the least k such that A307730(k) = n.

LINKS

Rémy Sigrist, Table of n, a(n) for n = 1..10000

Rémy Sigrist, C program for A348246

FORMULA

A348409(n) - a(n) >= n - 1.

EXAMPLE

For n = 6:

- sequence A307730 starts: 1, 2, 2, 3, 3, 3, 6, 4, 4, 4, 4, 6, 6, 6, 6, 6,

- the first occurrence of 6 appears at position 7,

- so a(6) = 7.

PROG

(C) See Links section.

CROSSREFS

Cf. A307720, A307730, A307630, A348409.

Records: A348252, A348253.

Sequence in context: A018403 A260121 A233291 * A348252 A018422 A058816

Adjacent sequences:  A348243 A348244 A348245 * A348247 A348248 A348249

KEYWORD

nonn

AUTHOR

Rémy Sigrist and N. J. A. Sloane, Oct 17 2021

STATUS

approved

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Last modified May 22 16:57 EDT 2022. Contains 353957 sequences. (Running on oeis4.)