Search: id:A088935 Results 1-1 of 1 results found. %I A088935 %S A088935 0,5,15,78,88,98,108,118,181,191,201,211,274,284,294,304,367,377,387,397, %T A088935 407,470,480,490,500,563,573,583,593,603,666,676,686,696,759,769,779, %U A088935 789,852,862,872,882,892,955,965,975,985 %N A088935 Numbers n such that leading digits of 2^n and 5^n are equal. %H A088935 T. Sillke, Powers of 2 and 5 Puzzle %e A088935 78 is in the sequence since 2^78 = 302231454903657293676544 and 5^78 = 3308722450212110699485634768279851414263248443603515625 %e A088935 98 is in the sequence since 2^98 = 316912650057057350374175801344 and 5^98 = 315544362088404722164691426113114491869282574043609201908111572265625. %t A088935 Select[ Range[ 1000 ], IntegerDigits[ 2^# ][ [ 1 ] ] == IntegerDigits[ 5^# ][ [ 1 ] ] & ] %Y A088935 Cf. A088995. %Y A088935 Sequence in context: A149655 A032122 A064678 this_sequence A030487 A165470 A165625 %Y A088935 Adjacent sequences: A088932 A088933 A088934 this_sequence A088936 A088937 A088938 %K A088935 base,nonn %O A088935 1,2 %A A088935 Lekraj Beedassy (blekraj(AT)yahoo.com), Dec 01 2003 %E A088935 Edited by Robert G. Wilson v (rgwv(AT)rgwv.com), Dec 02 2003 Search completed in 0.001 seconds