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A180429
The number of n-digit numbers requiring 3 nonzero squares in their representation as sum of squares.
3
2, 40, 463, 5081, 53722, 557687, 5730883, 58527612, 595228791, 6035604901, 61067111413, 616833883887, 6222429697992, 62704089037652, 631334954674157, 6352077572091621
OFFSET
1,1
COMMENTS
A049415(n) + A180426(n) + a(n) + A180347(n) = A052268(n)
FORMULA
a(n) = A180425(n)-A180425(n-1) for n>1.
CROSSREFS
Sequence in context: A092698 A181175 A035604 * A108033 A160229 A012807
KEYWORD
nonn,more,base
AUTHOR
Martin Renner, Jan 19 2011
EXTENSIONS
a(6) from Lars Blomberg, Jun 29 2011
a(7)-a(10) from Donovan Johnson, Jul 01 2011
a(10) corrected and a(11)-a(16) added by Hiroaki Yamanouchi, Aug 30 2014
STATUS
approved