A324568 - cp's OEIS frontend

A324568 a(n) = Sum_{i=0..n, j=0..n} (binomial(2i, j) + binomial(2j, i)).

n	a(n)
0	2
1	8
2	32
3	124
4	482
5	1882
6	7380
7	29036
8	114530
9	452638
10	1791638
11	7100430
12	28167986
13	111837902
14	444351292
15	1766536044
16	7026526226
17	27960911422
18	111308958942
19	443258277254
20	1765690504666
21	7035402933402
22	28039342445582
23	111773962249054
24	445654589001882

[2, 8, 32, 124, 482, 1882, 7380, 29036, 114530, 452638, 1791638, 7100430, 28167986, 111837902, 444351292, 1766536044, 7026526226, 27960911422, 111308958942, 443258277254, 1765690504666, 7035402933402, 28039342445582, 111773962249054, 445654589001882]

cp's OEIS Frontend

A324568 a(n) = Sum_{i=0..n, j=0..n} (binomial(2i, j) + binomial(2j, i)).

Table of values

List of values

cp's OEIS Frontend

A324568 a(n) = Sum_{i=0..n, j=0..n} (binomial(2*i, j) + binomial(2*j, i)).

Table of values

List of values

A324568 a(n) = Sum_{i=0..n, j=0..n} (binomial(2i, j) + binomial(2j, i)).