login

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”).

A131827 as a simple table

na(n)
14
27
39
411
513
615
736
837
944
1046
1154
1256
1370
1480
1584
1688
1790
1892
1994
20112
21118
22138
23142
24152
25158
26160
27162
28164
29166
30174
31176
32182
33184
34188
35198
36210
37212
38214
39228
40230
41234
42236
43252
44272
45276
46278
47282
48304
49312
50316
51318
52320
53322
54328
55352
56354
57364

[4,7,9,11,13,15,36,37,44,46,54,56,70,80,84,88,90,
 92,94,112,118,138,142,152,158,160,162,164,166,174,
 176,182,184,188,198,210,212,214,228,230,234,236,
 252,272,276,278,282,304,312,316,318,320,322,328,
 352,354,364]