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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.

A264327 Number of permutations of [n] with exactly eight (possibly overlapping) occurrences of the consecutive pattern 3412.

Table of values

n a(n)
18 1
19 493
20 633677
21 191009848
22 36439591193
23 5004015747625
24 534739648790073
25 47271093160982634
26 3626506774076237883
27 250491072534377023959
28 16015467370198042469229
29 967671571943986351197684
30 56117598468254134348216611
31 3160386391272010574690621055

List of values

[1, 493, 633677, 191009848, 36439591193, 5004015747625, 534739648790073, 47271093160982634, 3626506774076237883, 250491072534377023959, 16015467370198042469229, 967671571943986351197684, 56117598468254134348216611, 3160386391272010574690621055]

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

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