A084768 - cp's OEIS frontend

A084768 a(n) = P_n(7), where P_n is n-th Legendre polynomial; also, a(n) = central coefficient of (1 + 7x + 12x^2)^n.

n	a(n)
0	1
1	7
2	73
3	847
4	10321
5	129367
6	1651609
7	21360031
8	278905249
9	3668760487
10	48543499753
11	645382441711
12	8614382884849
13	115367108888311
14	1549456900170553
15	20861640747345727
16	281483386791966529
17	3805228005705102151
18	51527535767904810889
19	698796718936034430607

[1, 7, 73, 847, 10321, 129367, 1651609, 21360031, 278905249, 3668760487, 48543499753, 645382441711, 8614382884849, 115367108888311, 1549456900170553, 20861640747345727, 281483386791966529, 3805228005705102151, 51527535767904810889, 698796718936034430607]

cp's OEIS Frontend

A084768 a(n) = P_n(7), where P_n is n-th Legendre polynomial; also, a(n) = central coefficient of (1 + 7x + 12x^2)^n.

Table of values

List of values

cp's OEIS Frontend

A084768 a(n) = P_n(7), where P_n is n-th Legendre polynomial; also, a(n) = central coefficient of (1 + 7*x + 12*x^2)^n.

Table of values

List of values

A084768 a(n) = P_n(7), where P_n is n-th Legendre polynomial; also, a(n) = central coefficient of (1 + 7x + 12x^2)^n.