id:A104608 - OEIS Search Results

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Write the natural numbers in base 4 in a triangle with k digits in the k-th row, as shown below. Sequence gives the leading diagonal.

+0
16

1, 3, 1, 1, 1, 0, 1, 2, 1, 1, 0, 0, 2, 1, 2, 3, 1, 3, 1, 2, 2, 1, 1, 1, 2, 0, 0, 2, 1, 0, 2, 2, 2, 1, 0, 2, 0, 0, 3, 3, 2, 2, 0, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 2, 3, 2, 1, 1, 2, 2, 3, 1, 1, 3, 2, 0, 2, 2, 1, 0, 1, 2, 2, 2, 3, 2, 2, 2, 3, 3, 3, 3, 3, 0, 0, 1, 3, 3, 2, 2, 2, 3, 3, 3, 2, 3, 0, 1, 1, 2, 1, 1, 2 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`1` `23` `101` `1121` `32021` `222330...`
	MATHEMATICA	`t = Flatten[IntegerDigits[Range[1500], 4]]; t[[Table[n(n + 1)/2, {n, 105}]]]`
	CROSSREFS	`Cf. A104606, A104607, A104609, A104610, A104611, A104612, A104613, A091425, A104614, A104615, A104616, A104617, A104618, A104619, A104620.` `Sequence in context: A115378 A120060 A143295 this_sequence A110245 A136093 A134108` `Adjacent sequences: A104605 A104606 A104607 this_sequence A104609 A104610 A104611`
	KEYWORD	`base,nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Mar 16 2005`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

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