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A262514 Squares present in A259934. 13
0, 121, 144, 113569, 123904, 398161, 399424, 1708249, 1710864, 24591681, 24681024, 53890281, 53934336, 184063489, 184742464, 8338063969, 8339342400, 470959650225, 470972003076, 25876358308161, 25876429524544, 168967735540081, 168967969517824, 303965800198225 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Every other term is even and every other odd. From each odd square starts a new run of odd terms in A259934 (see A262516 for the lengths of these and A262517 for the odd terms themselves), which lasts as long as the next even square is encountered, at which point the parity of terms is switched back to even.

The terms were grepped from the data file of A259934 provided by Max Alekseyev, which contained terms up to A259934(397420670) = 9999999974.

The indexing starts from zero, because a(0) = 0 is a special case in this sequence.

a(31) > 10^16. - Hiroaki Yamanouchi, Oct 07 2015

LINKS

Hiroaki Yamanouchi, Table of n, a(n) for n = 0..30

FORMULA

a(n) = A259934(A263276(n)).

CROSSREFS

Cf. A262515 (square roots of these terms), A262516, A262517, A259934.

Sequence in context: A258202 A242372 A182072 * A258693 A037266 A240775

Adjacent sequences:  A262511 A262512 A262513 * A262515 A262516 A262517

KEYWORD

nonn

AUTHOR

Antti Karttunen, Sep 26 2015

EXTENSIONS

a(17)-a(30) from Hiroaki Yamanouchi, Oct 07 2015

STATUS

approved

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Last modified October 17 03:15 EDT 2018. Contains 316275 sequences. (Running on oeis4.)