cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A071297 Number of n-digit terms of A070153.

Original entry on oeis.org

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
Offset: 1

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Author

Lekraj Beedassy, Jun 11 2002

Keywords

Comments

Pairs (r,s) = (A070152(k), A070153(k)) are such that sum(j=r to s, j) equals the concatenation of r and s.

Examples

			a(3) = 4 since 119, 403, 533, 623 are the only three-digit terms of A070153.
		

Crossrefs

Extensions

Edited and corrected by Klaus Brockhaus, Jun 06 2003
a(6), a(7) and a(8) from Klaus Brockhaus, Jun 20 2003
a(6) corrected and terms a(9) onward added by Max Alekseyev, Feb 13 2012