A144514 - cp's OEIS frontend

A144514 a(n) = Sum_{k=0..n} (n+k+3)!/((n-k)!k!2^k).

n	a(n)
0	6
1	84
2	1050
3	13980
4	205800
5	3368316
6	61075854
7	1219445100
8	26635157010
9	632479986600
10	16235529291696
11	448220024574504
12	13247429692101150
13	417453231024613140
14	13974133833217747650
15	495278130521939366196
16	18530507890959175097784
17	729908595489477119015700

[6, 84, 1050, 13980, 205800, 3368316, 61075854, 1219445100, 26635157010, 632479986600, 16235529291696, 448220024574504, 13247429692101150, 417453231024613140, 13974133833217747650, 495278130521939366196, 18530507890959175097784, 729908595489477119015700]

cp's OEIS Frontend

A144514 a(n) = Sum_{k=0..n} (n+k+3)!/((n-k)!k!2^k).

Table of values

List of values

cp's OEIS Frontend

A144514 a(n) = Sum_{k=0..n} (n+k+3)!/((n-k)!*k!*2^k).

Table of values

List of values

A144514 a(n) = Sum_{k=0..n} (n+k+3)!/((n-k)!k!2^k).