A207997 - OEIS

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A207997 as a triangular array

1

1 1

2 3 2

4 9 9 4

8 27 41 27 8

16 81 187 187 81 16

32 243 853 1302 853 243 32

64 729 3891 9075 9075 3891 729 64

128 2187 17749 63267 96831 63267 17749 2187 128

256 6561 80963 441090 1034073 1034073 441090 80963

A207997 as a square array

`1`	`1`	`2`	`4`	`8`	`16`	`32`	`64`	`128`	`256`
`1`	`3`	`9`	`27`	`81`	`243`	`729`	`2187`	`6561`
`2`	`9`	`41`	`187`	`853`	`3891`	`17749`	`80963`
`4`	`27`	`187`	`1302`	`9075`	`63267`	`441090`
`8`	`81`	`853`	`9075`	`96831`	`1034073`
`16`	`243`	`3891`	`63267`	`1034073`
`32`	`729`	`17749`	`441090`
`64`	`2187`	`80963`
`128`

A207997 as an upper right triangle

`1`	`1`	`2`	`4`	`8`	`16`	`32`	`64`	`128`	`256`
	`1`	`3`	`9`	`27`	`81`	`243`	`729`	`2187`	`6561`
		`2`	`9`	`41`	`187`	`853`	`3891`	`17749`	`80963`
			`4`	`27`	`187`	`1302`	`9075`	`63267`	`441090`
				`8`	`81`	`853`	`9075`	`96831`	`1034073`
					`16`	`243`	`3891`	`63267`	`1034073`
						`32`	`729`	`17749`	`441090`
							`64`	`2187`	`80963`
								`128`

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)