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 A085503 Sub-triangle of A008292: take every second term of every second row. 2
 1, 1, 1, 1, 66, 1, 1, 1191, 1191, 1, 1, 14608, 156190, 14608, 1, 1, 152637, 9738114, 9738114, 152637, 1, 1, 1479726, 423281535, 2275172004, 423281535, 1479726, 1, 1, 13824739, 15041229521, 311387598411 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,5 COMMENTS Row sums are:{1, 2, 68, 2384, 185408, 19781504, 3124694528, 652885305344, 177948646719488, 60808005761859584, 25547946834881282048,...}. The sequence belongs to  the type Eulerian(n+1,k*m), k=1,2,3,...; here k=2: offset set to zero. LINKS EXAMPLE {1}, {1, 1}, {1, 66, 1}, {1, 1191, 1191, 1}, {1, 14608, 156190, 14608, 1}, {1, 152637, 9738114, 9738114, 152637, 1}, MATHEMATICA << DiscreteMath`Combinatorica` a = Table[Table[Eulerian[n + 1, 2*m], {m, 0, Floor[n/2]}], {n, 0, 20, 2}]; Flatten[%] CROSSREFS Cf. A008292 Sequence in context: A059755 A215657 A157631 * A271711 A138843 A033386 Adjacent sequences:  A085500 A085501 A085502 * A085504 A085505 A085506 KEYWORD nonn,tabl AUTHOR Roger L. Bagula, Dec 13 2010 STATUS approved

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Last modified August 26 00:35 EDT 2019. Contains 326324 sequences. (Running on oeis4.)