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 A195311 Row sums of A195310. 3
 0, 1, 3, 5, 7, 10, 13, 17, 21, 25, 29, 33, 38, 43, 48, 54, 60, 66, 72, 78, 84, 90, 97, 104, 111, 118, 126, 134, 142, 150, 158, 166, 174, 182, 190, 199, 208, 217, 226, 235, 245, 255, 265, 275, 285, 295, 305, 315, 325, 335, 345, 356, 367, 378, 389, 400 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 LINKS EXAMPLE If written as an irregular triangle in which row n has length A026741(n+1) then the first differences in row n are always n (see below). Triangle begins: 0, 1,3,5, 7,10, 13,17,21,25,29, 33,38,43, 48,54,60,66,72,78,84, 90,97,104,111, 118,126,134,142,150,158,166,174,182, 190,199,208,217,226, 235,245,255,265,275,285,295,305,315,325,335, 345,356,367,378,389,400 PROG (Sage) def A195311(n):     return add(max(0, n-k*(3*k-1)/2)+max(0, n-k*(3*k+1)/2) for k in (1..n)) [A195311(n) for n in (1..56)]  # Peter Luschny, Oct 12 2012 CROSSREFS Cf. A001318, A026741, A195309, A195310. Sequence in context: A029899 A072166 A077000 * A184013 A057672 A112509 Adjacent sequences:  A195308 A195309 A195310 * A195312 A195313 A195314 KEYWORD nonn AUTHOR Omar E. Pol, Sep 21 2011 STATUS approved

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Last modified November 13 13:15 EST 2018. Contains 317149 sequences. (Running on oeis4.)