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.

A336303 Number of ordered ways of writing the n-th n-gonal pyramidal number as a sum of n nonzero n-gonal pyramidal numbers.

Table of values

n a(n)
0 1
1 1
2 0
3 0
4 6
5 0
6 180
7 630
8 1120
9 36288
10 441000
11 6579870
12 59734620
13 1252872192
14 13668490836
15 162131872695
16 2971275208720
17 52783774330940
18 1334562954639156
19 16933262255752698
20 406499325562503480
21 8838644883526856832
22 190698441426122689290

List of values

[1, 1, 0, 0, 6, 0, 180, 630, 1120, 36288, 441000, 6579870, 59734620, 1252872192, 13668490836, 162131872695, 2971275208720, 52783774330940, 1334562954639156, 16933262255752698, 406499325562503480, 8838644883526856832, 190698441426122689290]

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

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