A208912 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A208912 as a triangular array

										1
									2		2
								3		5		4
							4		9		15		8
						5		14		36		37		16
					6		20		70		105		91		32
				7		27		120		235		306		213		64
			8		35		189		455		791		819		491		128
		9		44		280		798		1736		2380		2136		1109		256
	10		54		396		1302		3402		5796		6924		5373		2475		512
11		65		540

A208912 as a square array

1	2	3	4	5	6	7	8	9	10	11
2	5	9	14	20	27	35	44	54	65
4	15	36	70	120	189	280	396	540
8	37	105	235	455	798	1302
16	91	306	791	1736	3402
32	213	819	2380	5796
64	491	2136	6924
128	1109	5373
256	2475
512

A208912 as an upper right triangle

1	2	3	4	5	6	7	8	9	10	11
	2	5	9	14	20	27	35	44	54	65
		4	15	36	70	120	189	280	396	540
			8	37	105	235	455	798	1302
				16	91	306	791	1736	3402
					32	213	819	2380	5796
						64	491	2136	6924
							128	1109	5373
								256	2475
									512