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A061477 First (leftmost) digit - second digit + third digit - fourth digit .... = 8. 1

%I #5 Dec 05 2013 19:54:51

%S 8,80,91,107,118,129,206,217,228,239,305,316,327,338,349,404,415,426,

%T 437,448,459,503,514,525,536,547,558,569,602,613,624,635,646,657,668,

%U 679,701,712,723,734,745,756,767,778,789,800,811,822,833,844,855,866

%N First (leftmost) digit - second digit + third digit - fourth digit .... = 8.

%H Harvey P. Dale, <a href="/A061477/b061477.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Range[1000],Total[Times@@@Partition[Riffle[IntegerDigits[#],{1,-1},{2,-1,2}],2]]==8&] (* _Harvey P. Dale_, Oct 11 2012 *)

%Y Cf. A008593, A060978-A060980, A060982, A061470-A061479, A061870-A061882.

%K nonn,base,easy

%O 1,1

%A _Amarnath Murthy_, May 05 2001

%E More terms from _Robert G. Wilson v_, May 10 2001 and from Larry Reeves (larryr(AT)acm.org), May 15 2001

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Last modified April 23 05:37 EDT 2024. Contains 371906 sequences. (Running on oeis4.)