A213788 - cp's OEIS frontend

A213788 a(n) = Sum_{1<=i P(i)P(j)P(k), where P(m) is the k-th Pell number A000129(m).

n	a(n)
0	0
1	0
2	0
3	10
4	214
5	3491
6	52001
7	748788
8	10636260
9	150248190
10	2117562834
11	29816257390
12	419662506490
13	5905775317025
14	83104503504515
15	1169392060102440
16	16454728773220584
17	231536384221100316
18	3257968708458764196
19	45843125116860034258
20	645061876629223784830
21	9076710308820189950975

[0, 0, 0, 10, 214, 3491, 52001, 748788, 10636260, 150248190, 2117562834, 29816257390, 419662506490, 5905775317025, 83104503504515, 1169392060102440, 16454728773220584, 231536384221100316, 3257968708458764196, 45843125116860034258, 645061876629223784830, 9076710308820189950975]

cp's OEIS Frontend

A213788 a(n) = Sum_{1<=i P(i)P(j)P(k), where P(m) is the k-th Pell number A000129(m).

Table of values

List of values

cp's OEIS Frontend

A213788 a(n) = Sum_{1<=i P(i)*P(j)*P(k), where P(m) is the k-th Pell number A000129(m).

Table of values

List of values

A213788 a(n) = Sum_{1<=i P(i)P(j)P(k), where P(m) is the k-th Pell number A000129(m).