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.

A242162 Number of ascent sequences of length n with exactly nine flat steps.

Table of values

n a(n)
10 1
11 10
12 110
13 1100
14 11440
15 122122
16 1356355
17 15695680
18 189496450
19 2386901660
20 31351799908
21 429069944160
22 6112269059260
23 90535884261900
24 1392850530925700
25 22231833692574880
26 367758543399421625
27 6298103145093331000
28 111551381242802518875
29 2041429096543928691600

List of values

[1, 10, 110, 1100, 11440, 122122, 1356355, 15695680, 189496450, 2386901660, 31351799908, 429069944160, 6112269059260, 90535884261900, 1392850530925700, 22231833692574880, 367758543399421625, 6298103145093331000, 111551381242802518875, 2041429096543928691600]

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

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