A329073 - cp's OEIS frontend

A329073 a(n) = (1/n)Sum_{k=0..n-1} (40k+13)(-1)^k50^(n-1-k)T_k(4,1)T_k(1,-1)^2, where T_k(b,c) denotes the coefficient of x^k in the expansion of (x^2+bx+c)^k.

n	a(n)
1	13
2	219
3	7858
4	221525
5	9253710
6	375158958
7	16882409364
8	736344816813
9	32964312771550
10	1471835619627770
11	66910145732699964
12	3061043035494001682
13	141458526138008430124
14	6567714993530314856700
15	306628434270114823521000
16	14370411994543866356077725
17	676259546148988495771751550

[13, 219, 7858, 221525, 9253710, 375158958, 16882409364, 736344816813, 32964312771550, 1471835619627770, 66910145732699964, 3061043035494001682, 141458526138008430124, 6567714993530314856700, 306628434270114823521000, 14370411994543866356077725, 676259546148988495771751550]

cp's OEIS Frontend

A329073 a(n) = (1/n)Sum_{k=0..n-1} (40k+13)(-1)^k50^(n-1-k)T_k(4,1)T_k(1,-1)^2, where T_k(b,c) denotes the coefficient of x^k in the expansion of (x^2+bx+c)^k.

Table of values

List of values

cp's OEIS Frontend

A329073 a(n) = (1/n)*Sum_{k=0..n-1} (40k+13)*(-1)^k*50^(n-1-k)*T_k(4,1)*T_k(1,-1)^2, where T_k(b,c) denotes the coefficient of x^k in the expansion of (x^2+b*x+c)^k.

Table of values

List of values

A329073 a(n) = (1/n)Sum_{k=0..n-1} (40k+13)(-1)^k50^(n-1-k)T_k(4,1)T_k(1,-1)^2, where T_k(b,c) denotes the coefficient of x^k in the expansion of (x^2+bx+c)^k.