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A269020 a(n) = ceiling(n^(1+1/n)). 2
1, 3, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..65.

FORMULA

a(n) = A059921(n) + 1, n>=2.

EXAMPLE

a(5)=7 because 5^(6/5) ~ 6.8986; a(6)=9 because 6^(7/6) ~ 8.088.

MATHEMATICA

Table[Ceiling[n^(1 + 1 / n)], {n, 100}] (* Vincenzo Librandi, Feb 18 2016 *)

PROG

(MAGMA) [Ceiling(n^(1+1/n)): n in [1..70]]; // Vincenzo Librandi, Feb 18 2016

CROSSREFS

Cf. A059921 (floor(n^(1+1/n))), A269023 (complementary sequence).

Sequence in context: A323828 A079581 A229858 * A057716 A138591 A136492

Adjacent sequences:  A269017 A269018 A269019 * A269021 A269022 A269023

KEYWORD

nonn,easy

AUTHOR

Bob Selcoe, Feb 17 2016

STATUS

approved

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Last modified March 28 17:51 EDT 2020. Contains 333103 sequences. (Running on oeis4.)