id:A117663 - OEIS Search Results

Search: id:A117663

Displaying 1-1 of 1 results found.

page 1

Heptagonal numbers for which the digital root is also a heptagonal number.

+0
1

1, 7, 34, 55, 235, 286, 403, 469, 874, 970, 1177, 1288, 1918, 2059, 2356, 2512, 3367, 3553, 3940, 4141, 5221, 5452, 5929, 6175, 7480, 7756, 8323, 8614, 10144, 10465, 11122, 11458, 13213, 13579, 14326, 14707, 16687, 17098, 17935, 18361, 20566 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Cf. A000566.` `Sequence in context: A085636 A064306 A001795 this_sequence A063166 A024817 A071598` `Adjacent sequences: A117660 A117661 A117662 this_sequence A117664 A117665 A117666`
	KEYWORD	`nonn,base`
	AUTHOR	`Luc Stevens (lms022(AT)yahoo.com), Apr 11 2006`

page 1

Search completed in 0.002 seconds

Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

AT&T Labs Research