A186686 - OEIS

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A186686 as a triangular array

1

2 1

3 4 1

4 10 6 1

3 20 21 8 1

1 31 56 36 10 1

0 38 120 120 55 12 1

0 38 213 322 220 78 14 1

0 30 321 724 705 364 105 16 1

0 17 414 1400 1897 1353 560 136 18 1

0 6 456 2364 4410 4218 2366 816 171 20 1

0 1 427 3515 9020 11374 8365 3860 1140 210 22 1

A186686 as a square array

`1`	`2`	`3`	`4`	`3`	`1`	`0`	`0`	`0`	`0`	`0`	`0`
`1`	`4`	`10`	`20`	`31`	`38`	`38`	`30`	`17`	`6`	`1`
`1`	`6`	`21`	`56`	`120`	`213`	`321`	`414`	`456`	`427`
`1`	`8`	`36`	`120`	`322`	`724`	`1400`	`2364`	`3515`
`1`	`10`	`55`	`220`	`705`	`1897`	`4410`	`9020`
`1`	`12`	`78`	`364`	`1353`	`4218`	`11374`
`1`	`14`	`105`	`560`	`2366`	`8365`
`1`	`16`	`136`	`816`	`3860`
`1`	`18`	`171`	`1140`
`1`	`20`	`210`
`1`	`22`
`1`

A186686 as an upper right triangle

`1`	`2`	`3`	`4`	`3`	`1`	`0`	`0`	`0`	`0`	`0`	`0`
	`1`	`4`	`10`	`20`	`31`	`38`	`38`	`30`	`17`	`6`	`1`
		`1`	`6`	`21`	`56`	`120`	`213`	`321`	`414`	`456`	`427`
			`1`	`8`	`36`	`120`	`322`	`724`	`1400`	`2364`	`3515`
				`1`	`10`	`55`	`220`	`705`	`1897`	`4410`	`9020`
					`1`	`12`	`78`	`364`	`1353`	`4218`	`11374`
						`1`	`14`	`105`	`560`	`2366`	`8365`
							`1`	`16`	`136`	`816`	`3860`
								`1`	`18`	`171`	`1140`
									`1`	`20`	`210`
										`1`	`22`
											`1`

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Last modified May 31 23:52 EDT 2024. Contains 373008 sequences. (Running on oeis4.)