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A237451 Zero-based column index to irregular tables organized as successively larger square matrices. 6
0, 0, 1, 0, 1, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,8
COMMENTS
With sequences constructed of successively larger square matrices (cf. A074279), a(n) will return the distance of n from the left edge of the matrix that n is located in, with 0 standing for the leftmost column (please see the Example section).
A237452 gives the corresponding row index.
A238013 and A121997 give these same row and column indices, starting the numbering with index 1. - M. F. Hasler, Feb 17 2014
LINKS
FORMULA
a(n) = (A064866(n)-1) modulo A074279(n).
a(n) = A121997(n)-1. - M. F. Hasler, Feb 16 2014
EXAMPLE
This irregular table begins as:
0;
0,1;
0,1;
0,1,2;
0,1,2;
0,1,2;
0,1,2,3;
0,1,2,3;
0,1,2,3;
0,1,2,3;
0,1,2,3,4;
0,1,2,3,4;
0,1,2,3,4;
0,1,2,3,4;
0,1,2,3,4;...
PROG
(Scheme) (define (A237451 n) (modulo (-1+ (A064866 n)) (A074279 n)))
CROSSREFS
Sequence in context: A220663 A220659 A025858 * A215592 A025684 A025678
KEYWORD
nonn,tabf,easy
AUTHOR
Antti Karttunen, Feb 08 2014
STATUS
approved

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)