id:A087052 - OEIS Search Results

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Dismal triangular numbers: 0+1+2+3+...+n, where + is dismal addition.

+0
2

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 69, 69, 69, 69, 69, 69, 69, 69, 69, 69, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 89, 89, 89, 89, 89, 89, 89, 89, 89, 89, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 199, 199, 199, 199, 199, 199, 199, 199, 199, 199, 199, 199, 199, 199, 199, 199, 199, 199, 199, 199, 199 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`Differs from A087121 after 100 terms.`
	LINKS	`D. Applegate, C program for dismal arithmetic and number theory` `Index entries for sequences related to dismal arithmetic`
	MAPLE	`(Continuing from A087062) dt := proc(n) local i, t1; t1 := 0; for i from 1 to n do t1 := dadd(t1, i); od: t1; end;`
	CROSSREFS	`Sequence in context: A118758 A106649 A087121 this_sequence A117241 A077557 A075517` `Adjacent sequences: A087049 A087050 A087051 this_sequence A087053 A087054 A087055`
	KEYWORD	`nonn`
	AUTHOR	`Marc LeBrun and N. J. A. Sloane (njas(AT)research.att.com), Oct 19 2003`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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