A051617 - cp's OEIS frontend

A051617 a(n) = (4n+5)(!^4)/5(!^4), related to A007696(n+1) ((4n+1)(!^4) quartic, or 4-factorials).

n	a(n)
0	1
1	9
2	117
3	1989
4	41769
5	1044225
6	30282525
7	999323325
8	36974963025
9	1515973484025
10	68218806781125
11	3342721532275125
12	177164241210581625
13	10098361749003152625
14	616000066689192310125
15	40040004334797500158125

[1, 9, 117, 1989, 41769, 1044225, 30282525, 999323325, 36974963025, 1515973484025, 68218806781125, 3342721532275125, 177164241210581625, 10098361749003152625, 616000066689192310125, 40040004334797500158125]

cp's OEIS Frontend

A051617 a(n) = (4n+5)(!^4)/5(!^4), related to A007696(n+1) ((4n+1)(!^4) quartic, or 4-factorials).

Table of values

List of values

cp's OEIS Frontend

A051617 a(n) = (4*n+5)(!^4)/5(!^4), related to A007696(n+1) ((4*n+1)(!^4) quartic, or 4-factorials).

Table of values

List of values

A051617 a(n) = (4n+5)(!^4)/5(!^4), related to A007696(n+1) ((4n+1)(!^4) quartic, or 4-factorials).