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A071297
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Number of n-digit terms of A070153.
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2
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2, 5, 4, 10, 8, 56, 8, 39, 10, 38, 9, 208, 15, 37, 95, 143, 7, 502, 2, 319, 184, 235, 2, 1631, 68, 142, 58, 614, 71, 14216, 14, 5286, 81, 149, 251, 4018, 12, 17, 79, 5162, 21, 43065, 34, 3858, 932, 140, 6, 12852, 27, 2457, 360, 1121, 37, 10014
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OFFSET
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1,1
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COMMENTS
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Pairs (r,s) = (A070152(k), A070153(k)) are such that sum(j=r to s, j) equals the concatenation of r and s.
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LINKS
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EXAMPLE
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a(3) = 4 since 119, 403, 533, 623 are the only three-digit terms of A070153.
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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EXTENSIONS
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a(6) corrected and terms a(9) onward added by Max Alekseyev, Feb 13 2012
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STATUS
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approved
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