login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

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 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)

A305342 as a simple table

n a(n)
1 3
2 9
3 14
4 28
5 63
6 126
7 245
8 505
9 1037
10 2088
11 4230
12 8613
13 17472
14 35423
15 71929
16 146011
17 296248
18 601240
19 1220345
20 2476606
21 5026129
22 10200761
23 20702551
24 42015462
25 85270560
26 173057285
27 351219532
28 712800109
29 1446630113
30 2935938275
31 5958489786

[3,9,14,28,63,126,245,505,1037,2088,4230,8613,
 17472,35423,71929,146011,296248,601240,1220345,
 2476606,5026129,10200761,20702551,42015462,
 85270560,173057285,351219532,712800109,1446630113,
 2935938275,5958489786]

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 6 10:24 EST 2021. Contains 349563 sequences. (Running on oeis4.)