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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.

A224270 Absolute values of the numerators of the third column of ( 0 followed by (interleave 0 , A001803(n))/A060818(n) ) and its successive differences.

Table of values

n a(n)
0 1
1 1
2 5
3 11
4 95
5 203
6 861
7 1815
8 30459
9 63635
10 264979
11 550069
12 4555915
13 9412543
14 38816525
15 79898895
16 2627302995
17 5392044675
18 22104436695
19 45256266825
20 370241638305
21 756514878405
22 3088866211275
23 6300861570705
24 102746354288175
25 209286947903319

List of values

[1, 1, 5, 11, 95, 203, 861, 1815, 30459, 63635, 264979, 550069, 4555915, 9412543, 38816525, 79898895, 2627302995, 5392044675, 22104436695, 45256266825, 370241638305, 756514878405, 3088866211275, 6300861570705, 102746354288175, 209286947903319]

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

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