A132304 - cp's OEIS frontend

A132304 Sum of fourth powers of trinomial coefficients: a(n) = Sum_{k=0..2n} trinomial(n,k)^4 where trinomial(n,k) = [x^k] (1 + x + x^2)^n.

n	a(n)
0	1
1	3
2	115
3	5157
4	281907
5	16688953
6	1043460469
7	67769148555
8	4527813298227
9	309207348577017
10	21487099512128265
11	1514508365575327455
12	108015601963868232885
13	7780760215720406500095
14	565264860408377433558523
15	41369186303433709127364757
16	3047140179357736909766753331

[1, 3, 115, 5157, 281907, 16688953, 1043460469, 67769148555, 4527813298227, 309207348577017, 21487099512128265, 1514508365575327455, 108015601963868232885, 7780760215720406500095, 565264860408377433558523, 41369186303433709127364757, 3047140179357736909766753331]

cp's OEIS Frontend

A132304 Sum of fourth powers of trinomial coefficients: a(n) = Sum_{k=0..2n} trinomial(n,k)^4 where trinomial(n,k) = [x^k] (1 + x + x^2)^n.

Table of values

List of values