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.

A246227 Number of permutations of [n] with exactly seven (possibly overlapping) occurrences of the consecutive step pattern given by the binary expansion of n, where 1=up and 0=down.

Table of values

n a(n)
15 171470
16 0
17 0
18 0
19 0
20 0
21 64556303422787162
22 0
23 0
24 0
25 0
26 0
27 53330837507335912360442
28 0
29 0
30 0
31 510289061406183066554328264
32 0
33 0
34 253410955069956058210029266688
35 0
36 3671524606283906345376361339863458448
37 41993835528908638694682902028400861

List of values

[171470, 0, 0, 0, 0, 0, 64556303422787162, 0, 0, 0, 0, 0, 53330837507335912360442, 0, 0, 0, 510289061406183066554328264, 0, 0, 253410955069956058210029266688, 0, 3671524606283906345376361339863458448, 41993835528908638694682902028400861]