A292695 a(n) = A258223(2n,n).

1, 8, 1749, 1944225, 6439957299, 47971886252910, 677927299391810160, 16243385150174371081830, 609634394448842168438414483, 33797743985046745897969800271770, 2645657421035128682909045799293446355, 282144864134810484141733900449168244617439

Offset

0,2

Links

Alois P. Heinz, Table of n, a(n) for n = 0..100

Crossrefs

Cf. A258223.

Sequence in context: A061719 A050642 A050648 * A070903 A159386 A160302

Adjacent sequences: A292692 A292693 A292694 * A292696 A292697 A292698

Keyword

nonn

Author

Alois P. Heinz, Sep 20 2017

Status

approved