A090016 - OEIS

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A090016 as a simple table

n	a(n)
1	7
2	49
3	399
4	3689
5	38087
6	433713
7	5394991
8	72737161
9	1056085191
10	16423175153
11	272275569167
12	4792916427369
13	89267526953479
14	1753598009244529
15	36232438035285807
16	785431570870425353
17	17822981129678644871

[7,49,399,3689,38087,433713,5394991,72737161, 1056085191,16423175153,272275569167,4792916427369, 89267526953479,1753598009244529,36232438035285807, 785431570870425353,17822981129678644871]