

A293175


Integers with precisely six partitions into sums of four squares of nonnegative numbers.


2



66, 81, 97, 99, 105, 110, 115, 121, 123, 124, 137, 139, 141, 149, 155, 156, 158, 159, 164, 179, 188, 239, 264, 284, 440, 496, 624, 632, 656, 752, 1056, 1136, 1760, 1984, 2496, 2528, 2624, 3008, 4224, 4544, 7040, 7936, 9984, 10112, 10496, 12032, 16896, 18176
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

1,1


COMMENTS

A002635(a(n)) = 6.


LINKS

Table of n, a(n) for n=1..48.
D. H. Lehmer, On the Partition of Numbers into Squares, The American Mathematical Monthly, Vol. 55, No. 8, October 1948, pp. 476481.
Index entries for sequences related to sums of squares


MATHEMATICA

f[n_] := Length@ PowersRepresentations[n, 4, 2]; Select[ Range@ 19000, f@# == 6 &] (* Robert G. Wilson v, Oct 27 2017 *)


CROSSREFS

Cf. A001156, A002635, A006431, A025428, A180149, A245022, A294282, A294297.
Sequence in context: A128896 A109750 A127654 * A032485 A257029 A223734
Adjacent sequences: A293172 A293173 A293174 * A293176 A293177 A293178


KEYWORD

nonn


AUTHOR

Robert Price, Oct 27 2017


STATUS

approved



