A337332 - cp's OEIS frontend

A337332 a(n) = Sum_{k=0..n}C(n,k)C(n+k,k)C(2k,k)C(2n-2k,n-k)(-8)^(n-k).

n	a(n)
0	1
1	-12
2	228
3	-3504
4	44580
5	-298032
6	1407504
7	-275772096
8	21324125988
9	-966349948080
10	32198201397648
11	-831808446595776
12	16275197594916624
13	-210881419152530112
14	1110165241205298240
15	-28746364298042321664
16	4877709692143697517348
17	-323151109677783574203312
18	13976671241536620108719376

[1, -12, 228, -3504, 44580, -298032, 1407504, -275772096, 21324125988, -966349948080, 32198201397648, -831808446595776, 16275197594916624, -210881419152530112, 1110165241205298240, -28746364298042321664, 4877709692143697517348, -323151109677783574203312, 13976671241536620108719376]

cp's OEIS Frontend

A337332 a(n) = Sum_{k=0..n}C(n,k)C(n+k,k)C(2k,k)C(2n-2k,n-k)(-8)^(n-k).

Table of values

List of values

cp's OEIS Frontend

A337332 a(n) = Sum_{k=0..n}C(n,k)*C(n+k,k)*C(2k,k)*C(2n-2k,n-k)*(-8)^(n-k).

Table of values

List of values

A337332 a(n) = Sum_{k=0..n}C(n,k)C(n+k,k)C(2k,k)C(2n-2k,n-k)(-8)^(n-k).