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 A102806 Numbers that are not the sum of distinct tetrahedral numbers. 8
 2, 3, 6, 7, 8, 9, 12, 13, 16, 17, 18, 19, 22, 23, 26, 27, 28, 29, 32, 33, 37, 38, 41, 42, 43, 44, 47, 48, 51, 52, 53, 54, 58, 62, 63, 64, 68, 72, 73, 74, 75, 78, 79, 82, 83, 93, 97, 100, 103, 107, 110, 113, 117, 127, 128, 132, 136, 137, 138, 142, 146, 147, 148 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The b-file contains all the members of the sequence.  See link. - Robert Israel, Dec 29 2019 LINKS Robert Israel, Table of n, a(n) for n = 1..112 Robert Israel, Proof that the b-file is full MAPLE N:= 100000: # to test all n <= N ft:= t -> t*(t+1)*(t+2)/6: tets:= map(ft, [\$1..floor((6*N)^(1/3))]): f:= proc(n, tmax) option remember;    local res, s;    if member(n, tets) and n < tmax then return false fi;    for s in tets while s < min(n, tmax) do      if not procname(n-s, s) then return false fi    od;      true end proc: select(f, [\$1..N], infinity); # Robert Israel, Dec 29 2019 CROSSREFS Cf. A000292, A104246, A102795, etc. Sequence in context: A037460 A285134 A161824 * A275884 A003605 A344128 Adjacent sequences:  A102803 A102804 A102805 * A102807 A102808 A102809 KEYWORD nonn,fini,full AUTHOR Jud McCranie, Feb 26 2005 STATUS approved

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Last modified August 14 18:13 EDT 2022. Contains 356122 sequences. (Running on oeis4.)