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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.

A264463 Number of permutations of [n] with exactly four (possibly overlapping) occurrences of the generalized pattern 23-1.

Table of values

n a(n)
5 3
6 62
7 624
8 5513
9 46880
10 396545
11 3388893
12 29497132
13 262619041
14 2397130075
15 22458202716
16 216063700398
17 2134707078315
18 21655074753266
19 225471830153938
20 2408463527492433
21 26380434283682048
22 296130434080550183
23 3404883834560222589
24 40077202708717399396

List of values

[3, 62, 624, 5513, 46880, 396545, 3388893, 29497132, 262619041, 2397130075, 22458202716, 216063700398, 2134707078315, 21655074753266, 225471830153938, 2408463527492433, 26380434283682048, 296130434080550183, 3404883834560222589, 40077202708717399396]

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

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