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A144916 Integers k for which |A144912| attains a new maximal odd value. 2
4, 7, 16, 36, 64, 100, 144, 196, 256, 324, 400, 484, 576, 676, 784, 900, 1024, 1156, 1296, 1444, 1600, 1764, 1936, 2116, 2304, 2500, 2704, 2916, 3136, 3364, 3600, 3844, 4096, 4356, 4624, 4900, 5184, 5476, 5776, 6084, 6400, 6724, 7056, 7396, 7744, 8100 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Except for 7, all of these are even squares (A016742). For 7, the new maximum occurs in base 2 and for the rest it occurs in base sqrt(n).

LINKS

Table of n, a(n) for n=1..46.

Index entries for linear recurrences with constant coefficients, signature (3,-3,1).

PROG

(PARI) a(n) = if(n>2, 4*(n-1)^2, 1+3*n); \\ Jinyuan Wang, Jul 21 2020

CROSSREFS

Cf. A016742, A144912.

Sequence in context: A192800 A027609 A145763 * A217289 A050357 A296059

Adjacent sequences:  A144913 A144914 A144915 * A144917 A144918 A144919

KEYWORD

nonn,easy

AUTHOR

Reikku Kulon, Sep 25 2008

STATUS

approved

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Last modified May 28 07:30 EDT 2022. Contains 354112 sequences. (Running on oeis4.)