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A277904
Irregular table: row n (n >= 0) is obtained by listing numbers 0 .. A018819(n)-1.
4
0, 0, 0, 1, 0, 1, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19
OFFSET
1,9
LINKS
FORMULA
a(1) = 0; for n > 1, a(n) = n - A000123(A277903(n)-1) - 1.
EXAMPLE
A018819 -> range -> terms on row n
1 [0,0]: 0;
1 [0,0]: 0;
2 [0,1]: 0, 1;
2 [0,1]: 0, 1;
4 [0,3]: 0, 1, 2, 3;
4 [0,3]: 0, 1, 2, 3;
6 [0,5]: 0, 1, 2, 3, 4, 5;
etc.
PROG
(Scheme) (define (A277904 n) (if (= 1 n) 0 (- n (A000123 (+ -1 (A277903 n))) 1)))
CROSSREFS
Used for constructing A277905.
Retaining only every second row gives A278164.
Sequence in context: A189480 A010873 A049804 * A132387 A309954 A124757
KEYWORD
nonn,tabf
AUTHOR
Antti Karttunen, Nov 14 2016
STATUS
approved