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.

A229776 Number of 4X4 0..n arrays with rows in lexicographically nondecreasing order and columns in nonincreasing order.

Table of values

n a(n)
1 70
2 12958
3 1058494
4 35452250
5 637396928
6 7379634620
7 61734072288
8 402537583863
9 2155573868470
10 9841145888530
11 39380724254950
12 141067066333648
13 459822149867432
14 1381730749348760
15 3867950992777232
16 10173948824534685

List of values

[70, 12958, 1058494, 35452250, 637396928, 7379634620, 61734072288, 402537583863, 2155573868470, 9841145888530, 39380724254950, 141067066333648, 459822149867432, 1381730749348760, 3867950992777232, 10173948824534685]

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

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