A056593 Row sums of unsigned triangle A056588.

1, 2, 4, 10, 32, 132, 692, 4620, 39352, 427572, 5918992, 104375880, 2344751912, 67092113592, 2444702271152, 113425536387240, 6700361921561152, 503909247633965712, 48243317287320644752, 5879293173259041034800

Offset

0,2

Links

Table of n, a(n) for n=0..19.

Formula

a(n)= sum(((-1)^(floor((m+1)/2)))*A056588(n, m), m=0..n), n >= 0.

Crossrefs

Cf. A000045, A056588, A056592.

Sequence in context: A105557 A166741 A054091 * A154219 A173489 A089476

Adjacent sequences: A056590 A056591 A056592 * A056594 A056595 A056596

Keyword

nonn,easy

Author

Wolfdieter Lang Jul 10 2000

Status

approved