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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A277271 Second largest coefficient among the polynomials in row n of the triangle of q-binomial coefficients.

Table of values

n a(n)
4 1
5 1
6 2
7 4
8 7
9 11
10 19
11 30
12 55
13 90
14 166
15 285
16 519
17 902
18 1656
19 2929
20 5424
21 9673
22 18012
23 32467
24 60981
25 110599
26 208445
27 381301
28 722552
29 1327869
30 2522994
31 4665786
32 8902311
33 16524759
34 31594853
35 58935171
36 113038371
37 211499060
38 406350261
39 763246536
40 1470080699

List of values

[1, 1, 2, 4, 7, 11, 19, 30, 55, 90, 166, 285, 519, 902, 1656, 2929, 5424, 9673, 18012, 32467, 60981, 110599, 208445, 381301, 722552, 1327869, 2522994, 4665786, 8902311, 16524759, 31594853, 58935171, 113038371, 211499060, 406350261, 763246536, 1470080699]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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