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A298046
1/4 of the even edge of least 2-adic valuation of a primitive 3-simplex (0, b=A031173, c=A031174, d=A031175).
2
11, 63, 35, 33, 198, 275, 255, 585, 660, 195, 207, 390, 1449, 187, 1575, 1683, 1222, 418, 741, 2457, 2805, 275, 3465, 270, 2574, 2205, 4437, 1518, 3850, 5369, 5940, 1225, 6171, 6426, 3808, 1950, 7695, 1890, 8901, 8976, 9275, 741, 6435, 297, 10395, 4615, 12831, 12870, 13299, 2133, 13570, 7843, 10593, 4901
OFFSET
1,1
COMMENTS
Each primitive 3-simplex (0,b,c,d) with b > c > d is built by 1 odd edge and 2 even edges; the edge that is considered here is the even one with the least 2-adic valuation.
LINKS
Eric Weisstein's World of Mathematics, Trirectangular Tetrahedron
CROSSREFS
KEYWORD
nonn
AUTHOR
Ralf Steiner, Jan 11 2018
STATUS
approved