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 A115177 Positive numbers that are not the sum of a triangular number, a nonnegative cube and a positive Fibonacci number. 9
 690, 861, 915, 929, 1201, 1319, 1451, 1538, 1578, 1803, 1965, 2104, 2427, 2532, 2573, 2671, 2680, 2734, 2769, 2965, 3001, 3154, 3175, 3255, 3259, 3260, 3336, 3434, 3476, 3603, 3628, 3670, 3805, 3840, 3847, 3898, 3903, 3953, 4050, 4128 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS There are 225943534 such numbers up to 10^9, the last one in this range being 999999997. LINKS Robert Israel, Table of n, a(n) for n = 1..10000 MAPLE N:=10000: # to get all terms <= N T:= [seq(t*(t+1)/2, t=0..floor((sqrt(1+8*N)-1)/2))]: C:= [seq(t^3, t=0..floor(N^(1/3)))]: F:= [seq(combinat:-fibonacci(t), t=1..floor(log[(sqrt(5)+1)/2](N*sqrt(5))))]: CF:= select(`<=`, {seq(seq(c+f, c=C), f=F)}, N): sort(convert({\$1..N} minus {seq(seq(t+cf, t=T), cf=CF)}, list)); # Robert Israel, Mar 08 2018 CROSSREFS Cf. A115171, A115172, A115173, A115174, A115175, A115176. Sequence in context: A078877 A204145 A284284 * A263114 A214335 A060054 Adjacent sequences:  A115174 A115175 A115176 * A115178 A115179 A115180 KEYWORD nonn AUTHOR Giovanni Resta, Jan 15 2006 EXTENSIONS Name clarified by Altug Alkan, May 02 2016 STATUS approved

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Last modified October 17 16:51 EDT 2019. Contains 328120 sequences. (Running on oeis4.)