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A220662
Irregular table: row n (n>=1) consists of A084556(n) copies of A130664(n).
3
1, 2, 2, 4, 4, 6, 6, 6, 9, 9, 9, 12, 12, 12, 15, 15, 15, 18, 18, 18, 21, 21, 21, 24, 24, 24, 24, 28, 28, 28, 28, 32, 32, 32, 32, 36, 36, 36, 36, 40, 40, 40, 40, 44, 44, 44, 44, 48, 48, 48, 48, 52, 52, 52, 52, 56, 56, 56, 56, 60, 60, 60, 60, 64, 64, 64, 64, 68
OFFSET
1,2
COMMENTS
The term a(n) gives the position of the first term in A030298 which belongs to the same permutation as A030298(n) itself.
FORMULA
a(n) = A130664(A084557(n)) = A084555(A084557(n)-1)+1.
a(A130664(n)) = A130664(n).
EXAMPLE
Rows of this irregular table begin as:
1;
2, 2;
4, 4;
6, 6, 6;
9, 9, 9;
PROG
(define (A220662 n) (1+ (A084555 (-1+ (A084557 n)))))
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Antti Karttunen, Dec 18 2012
STATUS
approved