A074883 - OEIS

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A074883 as a triangular array

1

3 3

4 6 4

7 10 10 7

6 17 20 17 6

12 23 37 37 23 12

8 35 60 74 60 35 8

15 43 95 134 134 95 43 15

13 58 138 229 268 229 138 58 13

18 71 196 367 497 497 367 196 71 18

A074883 as a square array

`1`	`3`	`4`	`7`	`6`	`12`	`8`	`15`	`13`	`18`
`3`	`6`	`10`	`17`	`23`	`35`	`43`	`58`	`71`
`4`	`10`	`20`	`37`	`60`	`95`	`138`	`196`
`7`	`17`	`37`	`74`	`134`	`229`	`367`
`6`	`23`	`60`	`134`	`268`	`497`
`12`	`35`	`95`	`229`	`497`
`8`	`43`	`138`	`367`
`15`	`58`	`196`
`13`	`71`
`18`

A074883 as an upper right triangle

`1`	`3`	`4`	`7`	`6`	`12`	`8`	`15`	`13`	`18`
	`3`	`6`	`10`	`17`	`23`	`35`	`43`	`58`	`71`
		`4`	`10`	`20`	`37`	`60`	`95`	`138`	`196`
			`7`	`17`	`37`	`74`	`134`	`229`	`367`
				`6`	`23`	`60`	`134`	`268`	`497`
					`12`	`35`	`95`	`229`	`497`
						`8`	`43`	`138`	`367`
							`15`	`58`	`196`
								`13`	`71`
									`18`

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Last modified April 25 07:53 EDT 2024. Contains 371964 sequences. (Running on oeis4.)