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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

Table of n, a(n) for n=0..31.

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 November 18 19:59 EST 2019. Contains 329288 sequences. (Running on oeis4.)