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.

A144841 a(n) = 280*C(n,9)+10*C(n,6)+6*C(n,4)+C(n,3)+1 where C = binomial.

Table of values

n a(n)
1 1
2 1
3 2
4 11
5 41
6 121
7 316
8 757
9 1961
10 6281
11 22166
12 74031
13 221937
14 596961
15 1460096
16 3294761
17 6945521
18 13818417
19 26161386
20 47446611
21 82880281
22 140069161
23 229877572
24 367512861
25 573882201
26 877268601
27 1315379326
28 1937825527
29 2809097761
30 4012108241
31 5652377096
32 7862946641
33 10810114657
34 14700084961
35 19786641106

List of values

[1, 1, 2, 11, 41, 121, 316, 757, 1961, 6281, 22166, 74031, 221937, 596961, 1460096, 3294761, 6945521, 13818417, 26161386, 47446611, 82880281, 140069161, 229877572, 367512861, 573882201, 877268601, 1315379326, 1937825527, 2809097761, 4012108241, 5652377096, 7862946641, 10810114657, 14700084961, 19786641106]

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

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