A160482 Second left hand column of the Beta triangle A160480

1, 36, 2063, 182474, 23364725, 4107797216, 951631193979, 281268377936406, 103364179496231841, 46249298048633298156, 24761883016575811181799, 15633887186628672922202850, 11496293145747030133211784525

Offset

3,2

Links

Table of n, a(n) for n=3..15.

Maple

nmax:=15; a(1, 1):=0: for n from 2 to nmax do a(n, 1):=(2*n-3)^2*a(n-1, 1)-(2*(n-2))! od: a(2, 2):=0: for n from 3 to nmax do a(n, 2):=(2*n-3)^2*a(n-1, 2)-a(n-1, 1) od: seq(a(n, 2), n=3..nmax);

Crossrefs

A160480 is the Beta triangle.

A101269 is the first left hand column.

Sequence in context: A025754 A071128 A065782 * A135626 A064566 A230465

Adjacent sequences: A160479 A160480 A160481 * A160483 A160484 A160485

Keyword

easy,nonn

Author

Johannes W. Meijer, May 24 2009

Status

approved