id:A027384 - OEIS Search Results

Search: id:A027384

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Number of distinct products ij with 0 <= i, j <= n.

+0
7

1, 2, 4, 7, 10, 15, 19, 26, 31, 37, 43, 54, 60, 73, 81, 90, 98, 115, 124, 143, 153, 165, 177, 200, 210, 226, 240, 255, 268, 297, 309, 340, 355, 373, 391, 411, 424, 461, 481, 502, 518, 559, 576, 619, 639, 660, 684, 731, 748, 779, 801, 828, 851, 904, 926, 957, 979, 1009, 1039 (list; graph; listen)

	OFFSET	`0,2`
	LINKS	`T. D. Noe, Table of n, a(n) for n=0..1000`
	MAPLE	`L := {}; for i from 0 to n do for j from i to n do L := L union {i*j}; od: od: nops(L);`
	CROSSREFS	`Equals A027424 + 1, n>0.` `Sequence in context: A079963 A056750 A095116 this_sequence A022939 A036702 A007983` `Adjacent sequences: A027381 A027382 A027383 this_sequence A027385 A027386 A027387`
	KEYWORD	`nonn,easy`
	AUTHOR	`Fred Schwab (fschwab(AT)nrao.edu)`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

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