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A073430
Upper triangular region of the table A073346.
3
1, 1, 0, 0, 2, 0, 1, 0, 4, 0, 0, 2, 4, 8, 0, 0, 2, 8, 16, 16, 0, 0, 0, 12, 40, 48, 32, 0, 1, 0, 12, 80, 144, 128, 64, 0, 0, 2, 12, 136, 384, 448, 320, 128, 0, 0, 2, 12, 224, 912, 1408, 1280, 768, 256, 0, 0, 0, 20, 328, 2048, 4096, 4544, 3456, 1792, 512, 0, 0, 2, 16, 480, 4336
OFFSET
0,5
MAPLE
A073430 := n -> A073346bi(A003056(n), A002262(n));
A002262 := n -> n - binomial(floor((1/2)+sqrt(2*(1+n))), 2);
A003056 := n -> floor(sqrt(2*(1+n))-(1/2));
CROSSREFS
Sequence in context: A324811 A086780 A158612 * A371093 A053389 A354667
KEYWORD
nonn,tabl
AUTHOR
Antti Karttunen, Jul 31 2002
STATUS
approved