A370982 - cp's OEIS frontend

A370982 a(n) = Sum_{k=0..n} 2^(n - k)*Pochhammer(k/2, n - k). Row sums of A370419(n - k, k).

n	a(n)
0	1
1	1
2	2
3	6
4	27
5	173
6	1464
7	15414
8	193901
9	2834337
10	47182518
11	880910414
12	18225754839
13	413835006621
14	10230048547292
15	273473280803598
16	7860479860630329
17	241731205891735649
18	7919436892637421066
19	275351783014543431222
20	10126387847107625874803
21	392728180939713131370669

[1, 1, 2, 6, 27, 173, 1464, 15414, 193901, 2834337, 47182518, 880910414, 18225754839, 413835006621, 10230048547292, 273473280803598, 7860479860630329, 241731205891735649, 7919436892637421066, 275351783014543431222, 10126387847107625874803, 392728180939713131370669]

cp's OEIS Frontend

A370982 a(n) = Sum_{k=0..n} 2^(n - k)*Pochhammer(k/2, n - k). Row sums of A370419(n - k, k).

Table of values

List of values