id:A124360 - OEIS Search Results

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Numbers n for which the sum of the digits of n^k and the sum of the digits of n^(k+1), for some k, is equal to n.

+0
6

1, 9, 28, 36, 54, 90, 108, 135, 154, 181, 207, 225, 234, 307, 360, 388, 469, 523, 540, 685, 720 (list; graph; listen)

	OFFSET	`0,2`
	EXAMPLE	`18^6=34012224 (3+4+0+1+2+2+2+4=18) and 18^7=612220032 (6+1+2+2+2+0+0+3+2=18)` `Again 36^4=1679616 (1+6+7+9+6+1+6=36) and 36^5=60466176 (6+0+4+6+6+1+7+6=36)`
	CROSSREFS	`Cf. A124359.` `Sequence in context: A127629 A024670 A141805 this_sequence A041152 A015245 A031308` `Adjacent sequences: A124357 A124358 A124359 this_sequence A124361 A124362 A124363`
	KEYWORD	`nonn,base`
	AUTHOR	`Paolo P. Lava & Giorgio Balzarotti (ppl(AT)spl.at), Oct 27 2006`

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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.