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.

A294831 Numerators of the partial sums of the reciprocals of the numbers (k + 1)*(5*k + 4) = 2*A005476(k+1), for k >= 0.

Table of values

n a(n)
0 1
1 11
2 83
3 410
4 16799
5 495151
6 8516747
7 55850623
8 309309419
9 1088610631
10 6561497681
11 777210281963
12 12475578306953
13 287734917200239
14 10671842976127147
15 844855135994501953
16 846430303832665873
17 75457260356268267017
18 3551759427031132995079
19 711302288219532928235
20 712163917143684270659

List of values

[1, 11, 83, 410, 16799, 495151, 8516747, 55850623, 309309419, 1088610631, 6561497681, 777210281963, 12475578306953, 287734917200239, 10671842976127147, 844855135994501953, 846430303832665873, 75457260356268267017, 3551759427031132995079, 711302288219532928235, 712163917143684270659]