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A293976
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a(2n) = a(2n-1) + a(n) for n >= 1, a(2n+1) = a(2n) + 1, a(0) = 0.
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1
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0, 1, 2, 3, 5, 6, 9, 10, 15, 16, 22, 23, 32, 33, 43, 44, 59, 60, 76, 77, 99, 100, 123, 124, 156, 157, 190, 191, 234, 235, 279, 280, 339, 340, 400, 401, 477, 478, 555, 556, 655, 656, 756, 757, 880, 881, 1005, 1006, 1162, 1163, 1320, 1321, 1511, 1512, 1703
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OFFSET
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0,3
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COMMENTS
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Starting with a(1) = 1, the sequence can also be defined as the smallest increasing sequence equal to the sequence of differences between pairs of terms: a(n) = a(2n) - a(2n-1).
See A293977 for a variant which is not monotonic but a permutation of the nonnegative integers.
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LINKS
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PROG
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(PARI) A293976_vec(n, A=List(1))=for(i=1, n\2, listput(A, A[#A]+A[i]); listput(A, A[#A]+1)); concat(0, Vec(A))
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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