A154806 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A154806 as a simple table

n	a(n)
1	15
2	240
3	3855
4	61680
5	986895
6	15790320
7	252645135
8	4042322160
9	64677154575
10	1034834473200
11	16557351571215
12	264917625139440
13	4238682002231055
14	67818912035696880
15	1085102592571150095
16	17361641481138401520

[15,240,3855,61680,986895,15790320,252645135, 4042322160,64677154575,1034834473200, 16557351571215,264917625139440,4238682002231055, 67818912035696880,1085102592571150095, 17361641481138401520]