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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 (list; graph; refs; listen; history; text; internal format)
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

Table of n, a(n) for n=1..54.

Eric Weisstein's World of Mathematics, Trirectangular Tetrahedron

CROSSREFS

Cf. A298044, A298047, A031173, A031174, A031175.

Sequence in context: A052051 A162946 A301610 * A120723 A053367 A163706

Adjacent sequences:  A298043 A298044 A298045 * A298047 A298048 A298049

KEYWORD

nonn

AUTHOR

Ralf Steiner, Jan 11 2018

STATUS

approved

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Last modified June 18 15:13 EDT 2019. Contains 324213 sequences. (Running on oeis4.)