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A071297
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Number of n-digit terms of A070153.
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0
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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
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| 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
| R. Hoshino, Astonishing Pairs of Numbers, Crux Mathematicorum 27(1), 2001, p. 39-44.
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EXAMPLE
| a(3) = 4 since 119, 403, 533, 623 are the only three-digit terms of A070153.
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CROSSREFS
| Cf. A070152, A070153.
Sequence in context: A120119 A048678 A084432 * A114393 A180338 A100710
Adjacent sequences: A071294 A071295 A071296 * A071298 A071299 A071300
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KEYWORD
| nonn,base,changed
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AUTHOR
| Lekraj Beedassy (blekraj(AT)yahoo.com), Jun 11 2002
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EXTENSIONS
| Edited and corrected by Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Jun 06 2003
a(6), a(7) and a(8) from Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Jun 20 2003
a(6) corrected and terms a(9) onward added by Max Alekseyev (maxale(AT)gmail.com), Feb 13 2012
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