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A061578 First differences of A061577. 1

%I

%S 1,4,5,6,8,9,10,11,13,14,15,16,17,19,20,21,22,23,24,25,27,28,29,30,31,

%T 32,33,34,36,37,38,39,40,41,42,43,44,46,47,48,49,50,51,52,53,54,55,57,

%U 58,59,60,61,62,63,64,65,66,67,68,70,71,72,73,74,75,76,77,78,79,80,81

%N First differences of A061577.

%Y Cf. A005228, A061577.

%K nonn,easy

%O 1,2

%A Ronald van Eijck (eequalsmcsquare(AT)hotmail.com), May 21 2001

%E More terms from Larry Reeves (larryr(AT)acm.org), Jun 12 2001

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Last modified June 20 23:44 EDT 2021. Contains 345316 sequences. (Running on oeis4.)