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.

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A124221 Triangle read by rows: add A124222(n,k) to A124222(n-1,k).

Original entry on oeis.org

1, 2, 4, 8, 0, 14, 2, 22, 9, 1, 0, 32, 25, 5, 2, 44, 54, 16, 12, 0, 2, 0, 58, 100, 38, 42, 2, 13, 2, 1, 74, 167, 75, 110, 9, 51, 15, 7, 1, 0, 3, 0, 92, 259, 131, 240, 25, 146, 63, 28, 5, 5, 24, 2, 1, 3, 112, 380, 210, 462, 54, 340, 193, 80, 16, 29, 111, 18, 11, 25, 0, 2, 0, 0, 1, 4, 0
Offset: 1

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Author

Alford Arnold, Oct 23 2006

Keywords

Comments

Row sums are powers of 2. Row sum sequence for A124222 is A001045.

Examples

			A124222 begins
0
1
1
3
5 0
9 2
13 7 1 0
so A124221 begins
1
2
4
8 0
14 2
22 9 1 0
		

Crossrefs

Formula

A124221(n,k) = A124222(n,k) + A124222(n-1,k) for n>0
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