A386870 - cp's OEIS frontend

A386870 a(n) = Sum_{k=0..n} 2^(n-k) * binomial(4n+2,k) binomial(4*n-k,n-k).

n	a(n)
0	1
1	14
2	297
3	7024
4	174608
5	4466622
6	116403982
7	3073417652
8	81935130444
9	2200645300312
10	59455990356377
11	1614089892481416
12	43993649464273588
13	1203123469832767556
14	32997093202771098204
15	907229481990010791100
16	24997561841045998756604
17	690088514785377393552360

[1, 14, 297, 7024, 174608, 4466622, 116403982, 3073417652, 81935130444, 2200645300312, 59455990356377, 1614089892481416, 43993649464273588, 1203123469832767556, 32997093202771098204, 907229481990010791100, 24997561841045998756604, 690088514785377393552360]

cp's OEIS Frontend

A386870 a(n) = Sum_{k=0..n} 2^(n-k) * binomial(4n+2,k) binomial(4*n-k,n-k).

Table of values

List of values

cp's OEIS Frontend

A386870 a(n) = Sum_{k=0..n} 2^(n-k) * binomial(4*n+2,k) * binomial(4*n-k,n-k).

Table of values

List of values

A386870 a(n) = Sum_{k=0..n} 2^(n-k) * binomial(4n+2,k) binomial(4*n-k,n-k).