|
|
|
|
0, 4, 20, 40, 100, 172, 248, 336, 568, 820, 1100, 1400, 1692, 2012, 2352, 2720, 3632, 4580, 5572, 6600, 7700, 8844, 10024, 11248, 12392, 13588, 14844, 16152, 17484, 18876, 20320, 21824, 25440, 29124, 32884, 36712, 40644, 44652, 48728, 52880
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,2
|
|
COMMENTS
|
All terms seem to be divisible by 4. Cf. A163477.
|
|
LINKS
|
|
|
MATHEMATICA
|
nn = 7; s[{n_, k_}, {m_}] := (a[k, n] = m - 1); MapIndexed[s, List @@ HilbertCurve[nn][[1]]]; Total /@ Table[a[n - k, k], {n, 0, nn^2}, {k, n, 0, -1}] (* Michael De Vlieger, Nov 01 2022, after Jean-François Alcover at A163357 *)
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|