cp's OEIS Frontend

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.

A005191 Central pentanomial coefficients: largest coefficient of (1 + x + ... + x^4)^n.

Table of values

n a(n)
0 1
1 1
2 5
3 19
4 85
5 381
6 1751
7 8135
8 38165
9 180325
10 856945
11 4091495
12 19611175
13 94309099
14 454805755
15 2198649549
16 10651488789
17 51698642405
18 251345549849
19 1223798004815
20 5966636799745
21 29125608152345
22 142330448514875
23 696235630761115
24 3408895901222375

List of values

[1, 1, 5, 19, 85, 381, 1751, 8135, 38165, 180325, 856945, 4091495, 19611175, 94309099, 454805755, 2198649549, 10651488789, 51698642405, 251345549849, 1223798004815, 5966636799745, 29125608152345, 142330448514875, 696235630761115, 3408895901222375]

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

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