A180669 - cp's OEIS frontend

A180669 a(n) = a(n-1)+a(n-2)+a(n-3)+4n^2-16n+18 with a(0)=0, a(1)=0 and a(2)=1.

n	a(n)
0	0
1	0
2	1
3	7
4	26
5	72
6	171
7	371
8	760
9	1500
10	2889
11	5475
12	10266
13	19116
14	35435
15	65495
16	120832
17	222664
18	410017
19	754671
20	1388650
21	2554784
22	4699707
23	8644907
24	15901336
25	29248068
26	53796617
27	98948523
28	181995914
29	334743972
30	615691547

[0, 0, 1, 7, 26, 72, 171, 371, 760, 1500, 2889, 5475, 10266, 19116, 35435, 65495, 120832, 222664, 410017, 754671, 1388650, 2554784, 4699707, 8644907, 15901336, 29248068, 53796617, 98948523, 181995914, 334743972, 615691547]

cp's OEIS Frontend

A180669 a(n) = a(n-1)+a(n-2)+a(n-3)+4n^2-16n+18 with a(0)=0, a(1)=0 and a(2)=1.

Table of values

List of values

cp's OEIS Frontend

A180669 a(n) = a(n-1)+a(n-2)+a(n-3)+4*n^2-16*n+18 with a(0)=0, a(1)=0 and a(2)=1.

Table of values

List of values

A180669 a(n) = a(n-1)+a(n-2)+a(n-3)+4n^2-16n+18 with a(0)=0, a(1)=0 and a(2)=1.