A137406 - OEIS

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A137406 as a triangular array

1

1 -2

-1 2 -4

-2 6 -8 8

1 -6 16 -16 16

3 -14 36 -56 48 -32

-1 12 -44 88 -128 96 -64

-4 28 -104 232 -352 384 -256 128

1 -20 100 -296 592 -800 832 -512 256

5 -50 244 -728 1536 -2368 2688 -2304 1280 -512

-1 30 -200 784 -2048 3872 -5568 5888 -4864 2560 -1024

A137406 as a square array

`1`	`1`	`-1`	`-2`	`1`	`3`	`-1`	`-4`	`1`	`5`	`-1`
`-2`	`2`	`6`	`-6`	`-14`	`12`	`28`	`-20`	`-50`	`30`
`-4`	`-8`	`16`	`36`	`-44`	`-104`	`100`	`244`	`-200`
`8`	`-16`	`-56`	`88`	`232`	`-296`	`-728`	`784`
`16`	`48`	`-128`	`-352`	`592`	`1536`	`-2048`
`-32`	`96`	`384`	`-800`	`-2368`	`3872`
`-64`	`-256`	`832`	`2688`	`-5568`
`128`	`-512`	`-2304`	`5888`
`256`	`1280`	`-4864`
`-512`	`2560`
`-1024`

A137406 as an upper right triangle

`1`	`1`	`-1`	`-2`	`1`	`3`	`-1`	`-4`	`1`	`5`	`-1`
	`-2`	`2`	`6`	`-6`	`-14`	`12`	`28`	`-20`	`-50`	`30`
		`-4`	`-8`	`16`	`36`	`-44`	`-104`	`100`	`244`	`-200`
			`8`	`-16`	`-56`	`88`	`232`	`-296`	`-728`	`784`
				`16`	`48`	`-128`	`-352`	`592`	`1536`	`-2048`
					`-32`	`96`	`384`	`-800`	`-2368`	`3872`
						`-64`	`-256`	`832`	`2688`	`-5568`
							`128`	`-512`	`-2304`	`5888`
								`256`	`1280`	`-4864`
									`-512`	`2560`
										`-1024`

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Last modified December 6 09:20 EST 2023. Contains 367600 sequences. (Running on oeis4.)