id:A089355 - OEIS Search Results

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A quarter-square shaped (A002620) staircase array distributing the frequency of objects counted by A047970.

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1, 1, 1, 1, 2, 1, 1, 1, 3, 2, 4, 2, 2, 1, 4, 3, 8, 7, 9, 5, 5, 1, 1, 5, 4, 13, 14, 23, 20, 25, 16, 14, 7, 2, 1, 1, 6, 5, 19, 23, 44, 49, 71, 65, 75, 60, 48, 32, 18, 6, 1, 1, 7, 6, 26, 34, 73, 94, 154, 172, 232, 234, 249, 228, 195, 145, 101, 59, 27, 9, 2 (list; graph; listen)

	OFFSET	`1,5`
	EXAMPLE	`The array begins:` `1..1..1..1..1..1..1....` `...1..2..3..4..5..6....` `......1..2..3..4..5....` `......1..4..8.13.19....` `where the fourth row counts the ordered partitions of type 221^k and type 41^k since (1 3 6 10 15 ...) + (0 1 2 3 4 ...) yields the required result.`
	CROSSREFS	`Sequence in context: A120221 A094899 A057774 this_sequence A136043 A096815 A124445` `Adjacent sequences: A089352 A089353 A089354 this_sequence A089356 A089357 A089358`
	KEYWORD	`nonn,tabf`
	AUTHOR	`Alford Arnold (Alford1940(AT)aol.com), Dec 26 2003`

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Last modified November 27 14:50 EST 2009. Contains 167570 sequences.

AT&T Labs Research