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A164514 1 followed by numbers that are not squares. 3
1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Complement of A000290 for n >= 1.

a(n) = A255437(A255527(n)) and A255437(m) < a(n) for m < A255527(n), i.e. record values in A255437.

LINKS

Table of n, a(n) for n=1..72.

FORMULA

{1} Union A000037.

a(n) = A000037(n-1) = n-1+floor(1/2 + sqrt(n - 1)) = n-1 + floor( sqrt(n-1 + floor( sqrt(n - 1) ))) for n > 1.

PROG

(Haskell)

a164514 n = a164514_list !! (n-1)

a164514_list = 1 : a000037_list

-- Reinhard Zumkeller, Mar 23 2015

(PARI) is(n)=!issquare(n) || n==1 \\ Charles R Greathouse IV, Sep 01 2015

CROSSREFS

Cf. A000037, A255437, A255527.

Sequence in context: A072099 A046841 A244218 * A000037 A028761 A028809

Adjacent sequences:  A164511 A164512 A164513 * A164515 A164516 A164517

KEYWORD

nonn,less,easy

AUTHOR

Jaroslav Krizek, Aug 14 2009

EXTENSIONS

Edited by R. J. Mathar, Aug 21 2009

STATUS

approved

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Last modified January 23 20:01 EST 2017. Contains 281213 sequences.