A216630 - cp's OEIS frontend

A216630 Number of nondecreasing arrays of n 0..n-1 integers with the sum of their 2nd powers equal to sum(i^2,i=0..n-1).

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	4
7	14
8	37
9	105
10	309
11	939
12	2903
13	8865
14	28163
15	90648
16	297615
17	989077
18	3320885
19	11280835
20	38583017
21	133018026
22	461630411
23	1612842357
24	5667628973
25	20019876401
26	71078302590
27	253504107762
28	908014000543
29	3265037780657

[1, 1, 1, 1, 2, 4, 14, 37, 105, 309, 939, 2903, 8865, 28163, 90648, 297615, 989077, 3320885, 11280835, 38583017, 133018026, 461630411, 1612842357, 5667628973, 20019876401, 71078302590, 253504107762, 908014000543, 3265037780657]

cp's OEIS Frontend

A216630 Number of nondecreasing arrays of n 0..n-1 integers with the sum of their 2nd powers equal to sum(i^2,i=0..n-1).

Table of values

List of values