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A129861 Smallest square s such that A024352(n) + s is square. 0
1, 4, 9, 1, 16, 25, 4, 36, 1, 9, 64, 81, 16, 4, 121, 1, 144, 9, 36, 196, 225, 4, 16, 1, 64, 324, 25, 9, 400, 441, 100, 4, 529, 1, 576, 49, 144, 676, 9, 25, 64, 841, 4, 900, 1, 36, 16, 1089, 256, 100, 1225, 49, 1296, 25, 324, 4, 1521, 81, 144, 1681, 16, 36, 169, 81, 1936, 9, 484 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..67.

FORMULA

y(y+e) = A024352(n), where e is the smallest even number that satisfies this equation, A(n) = (e/2)^2.

EXAMPLE

5(5+6) = 55, smallest square = (6/2)^2 = 9

4(4+10) = 56, smallest square = (10/2)^2 = 25

3(3+16) = 57, smallest square = (16/2)^2 = 64

1(1+58) = 59, smallest square = (58/2)^2 = 841

6(6+4) = 60, smallest square = (4/2)^2 = 4

1(1+60) = 61, smallest square = (60/2)^2 = 900

7(7+2) = 63, smallest square = (2/2)^2 = 1

etc.

CROSSREFS

Cf. A024352.

Sequence in context: A070638 A236104 A152205 * A055491 A032523 A032760

Adjacent sequences:  A129858 A129859 A129860 * A129862 A129863 A129864

KEYWORD

nonn

AUTHOR

Andrew Plewe, May 23 2007

STATUS

approved

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Last modified September 16 23:31 EDT 2014. Contains 246831 sequences.