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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.

A280570 E.g.f. satisfies: A(x - Integral A(x) dx) = x + Integral 3*A(x) dx.

Table of values

n a(n)
1 1
2 4
3 28
4 332
5 5748
6 131940
7 3791692
8 131375324
9 5343640212
10 250142552212
11 13271217848604
12 788346022938556
13 51916178572447140
14 3759254932421361284
15 297243198474965188732
16 25513664852425377663756
17 2365246919693613357168916
18 235776253411115081902083556
19 25174157913006507920211300588
20 2869108641038261410331666767772

List of values

[1, 4, 28, 332, 5748, 131940, 3791692, 131375324, 5343640212, 250142552212, 13271217848604, 788346022938556, 51916178572447140, 3759254932421361284, 297243198474965188732, 25513664852425377663756, 2365246919693613357168916, 235776253411115081902083556, 25174157913006507920211300588, 2869108641038261410331666767772]

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

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