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A056593 Row sums of unsigned triangle A056588. 2
1, 2, 4, 10, 32, 132, 692, 4620, 39352, 427572, 5918992, 104375880, 2344751912, 67092113592, 2444702271152, 113425536387240, 6700361921561152, 503909247633965712, 48243317287320644752, 5879293173259041034800 (list; graph; refs; listen; history; text; internal format)
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

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Last modified December 6 21:48 EST 2019. Contains 329809 sequences. (Running on oeis4.)