A369344 - cp's OEIS frontend

A369344 a(n) is the constant term in expansion of Product_{k=1..n} (x^(k(k+1)/2) + 1 + 1/x^(k(k+1)/2)).

n	a(n)
0	1
1	1
2	1
3	1
4	3
5	5
6	11
7	27
8	61
9	133
10	311
11	761
12	1839
13	4575
14	11573
15	29641
16	76487
17	199617
18	524067
19	1384697
20	3681069
21	9841217
22	26437741
23	71369101
24	193496241
25	526685793
26	1438816755
27	3944034221
28	10845006963
29	29908325821
30	82707648985
31	229306378067
32	637283978821

[1, 1, 1, 1, 3, 5, 11, 27, 61, 133, 311, 761, 1839, 4575, 11573, 29641, 76487, 199617, 524067, 1384697, 3681069, 9841217, 26437741, 71369101, 193496241, 526685793, 1438816755, 3944034221, 10845006963, 29908325821, 82707648985, 229306378067, 637283978821]

cp's OEIS Frontend

A369344 a(n) is the constant term in expansion of Product_{k=1..n} (x^(k(k+1)/2) + 1 + 1/x^(k(k+1)/2)).

Table of values

List of values

cp's OEIS Frontend

A369344 a(n) is the constant term in expansion of Product_{k=1..n} (x^(k*(k+1)/2) + 1 + 1/x^(k*(k+1)/2)).

Table of values

List of values

A369344 a(n) is the constant term in expansion of Product_{k=1..n} (x^(k(k+1)/2) + 1 + 1/x^(k(k+1)/2)).